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Finding the Fourth Proportional to 515,382.16, 711,226.02 and 289,032.52

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Solution

The fourth proportional to 515,382.16, 711,226.02 and 289,032.52 is: 398,864.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,382.16 : 711,226.02 = 289,032.52 : x
  2. Step 2: Convert to fraction form
    515,382.16/711,226.02 = 289,032.52/x
  3. Step 3: Cross multiply
    515,382.16x = 711,226.02 × 289,032.52
  4. Step 4: Simplify right side
    515,382.16x = 205,567,448,850.17
  5. Step 5: Solve for x
    x = 205,567,448,850.17/515,382.16
  6. Step 6: Final answer
    x = 398,864.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.