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Finding the Fourth Proportional to 520,068.20, 779,583.90 and 239,095.40

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Solution

The fourth proportional to 520,068.20, 779,583.90 and 239,095.40 is: 358,404.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,068.20 : 779,583.90 = 239,095.40 : x
  2. Step 2: Convert to fraction form
    520,068.20/779,583.90 = 239,095.40/x
  3. Step 3: Cross multiply
    520,068.20x = 779,583.90 × 239,095.40
  4. Step 4: Simplify right side
    520,068.20x = 186,394,924,404.06
  5. Step 5: Solve for x
    x = 186,394,924,404.06/520,068.20
  6. Step 6: Final answer
    x = 358,404.77

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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.