Home / 478,256,418.30-717,384,627.45-155,140,290.30

Finding the Fourth Proportional to 478,256,418.30, 717,384,627.45 and 155,140,290.30

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Solution

The fourth proportional to 478,256,418.30, 717,384,627.45 and 155,140,290.30 is: 232,710,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,256,418.30 : 717,384,627.45 = 155,140,290.30 : x
  2. Step 2: Convert to fraction form
    478,256,418.30/717,384,627.45 = 155,140,290.30/x
  3. Step 3: Cross multiply
    478,256,418.30x = 717,384,627.45 × 155,140,290.30
  4. Step 4: Simplify right side
    478,256,418.30x = 111,295,259,359,350,368
  5. Step 5: Solve for x
    x = 111,295,259,359,350,368/478,256,418.30
  6. Step 6: Final answer
    x = 232,710,435.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.