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Finding the Fourth Proportional to 510,857.60, 766,286.40 and 136,918.40

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Solution

The fourth proportional to 510,857.60, 766,286.40 and 136,918.40 is: 205,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,857.60 : 766,286.40 = 136,918.40 : x
  2. Step 2: Convert to fraction form
    510,857.60/766,286.40 = 136,918.40/x
  3. Step 3: Cross multiply
    510,857.60x = 766,286.40 × 136,918.40
  4. Step 4: Simplify right side
    510,857.60x = 104,918,707,829.76
  5. Step 5: Solve for x
    x = 104,918,707,829.76/510,857.60
  6. Step 6: Final answer
    x = 205,377.60

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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.