Home / 521,011.20-781,516.80-166,051.20

Finding the Fourth Proportional to 521,011.20, 781,516.80 and 166,051.20

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Solution

The fourth proportional to 521,011.20, 781,516.80 and 166,051.20 is: 249,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,011.20 : 781,516.80 = 166,051.20 : x
  2. Step 2: Convert to fraction form
    521,011.20/781,516.80 = 166,051.20/x
  3. Step 3: Cross multiply
    521,011.20x = 781,516.80 × 166,051.20
  4. Step 4: Simplify right side
    521,011.20x = 129,771,802,460.16
  5. Step 5: Solve for x
    x = 129,771,802,460.16/521,011.20
  6. Step 6: Final answer
    x = 249,076.80

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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.