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Finding the Fourth Proportional to 539,078.40, 808,617.60 and 160,012.80

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Solution

The fourth proportional to 539,078.40, 808,617.60 and 160,012.80 is: 240,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,078.40 : 808,617.60 = 160,012.80 : x
  2. Step 2: Convert to fraction form
    539,078.40/808,617.60 = 160,012.80/x
  3. Step 3: Cross multiply
    539,078.40x = 808,617.60 × 160,012.80
  4. Step 4: Simplify right side
    539,078.40x = 129,389,166,305.28
  5. Step 5: Solve for x
    x = 129,389,166,305.28/539,078.40
  6. Step 6: Final answer
    x = 240,019.20

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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.