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Finding the Fourth Proportional to 509,332.59, 702,844.43 and 279,905.91

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Solution

The fourth proportional to 509,332.59, 702,844.43 and 279,905.91 is: 386,251.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,332.59 : 702,844.43 = 279,905.91 : x
  2. Step 2: Convert to fraction form
    509,332.59/702,844.43 = 279,905.91/x
  3. Step 3: Cross multiply
    509,332.59x = 702,844.43 × 279,905.91
  4. Step 4: Simplify right side
    509,332.59x = 196,730,308,368.05
  5. Step 5: Solve for x
    x = 196,730,308,368.05/509,332.59
  6. Step 6: Final answer
    x = 386,251.17

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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.