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Finding the Fourth Proportional to 516,009.30, 774,013.95 and 136,929.30

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Solution

The fourth proportional to 516,009.30, 774,013.95 and 136,929.30 is: 205,393.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,009.30 : 774,013.95 = 136,929.30 : x
  2. Step 2: Convert to fraction form
    516,009.30/774,013.95 = 136,929.30/x
  3. Step 3: Cross multiply
    516,009.30x = 774,013.95 × 136,929.30
  4. Step 4: Simplify right side
    516,009.30x = 105,985,188,363.74
  5. Step 5: Solve for x
    x = 105,985,188,363.74/516,009.30
  6. Step 6: Final answer
    x = 205,393.95

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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.