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Finding the Fourth Proportional to 516,691.02, 713,030.40 and 290,336.52

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Solution

The fourth proportional to 516,691.02, 713,030.40 and 290,336.52 is: 400,662.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,691.02 : 713,030.40 = 290,336.52 : x
  2. Step 2: Convert to fraction form
    516,691.02/713,030.40 = 290,336.52/x
  3. Step 3: Cross multiply
    516,691.02x = 713,030.40 × 290,336.52
  4. Step 4: Simplify right side
    516,691.02x = 207,018,764,990.21
  5. Step 5: Solve for x
    x = 207,018,764,990.21/516,691.02
  6. Step 6: Final answer
    x = 400,662.60

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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.