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Finding the Fourth Proportional to 473,078.80, 709,618.20 and 305,117.20

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Solution

The fourth proportional to 473,078.80, 709,618.20 and 305,117.20 is: 457,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,078.80 : 709,618.20 = 305,117.20 : x
  2. Step 2: Convert to fraction form
    473,078.80/709,618.20 = 305,117.20/x
  3. Step 3: Cross multiply
    473,078.80x = 709,618.20 × 305,117.20
  4. Step 4: Simplify right side
    473,078.80x = 216,516,718,253.04
  5. Step 5: Solve for x
    x = 216,516,718,253.04/473,078.80
  6. Step 6: Final answer
    x = 457,675.80

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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.