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Finding the Fourth Proportional to 615,200.70, 921,807.45 and 348,167.10

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Solution

The fourth proportional to 615,200.70, 921,807.45 and 348,167.10 is: 521,688.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,200.70 : 921,807.45 = 348,167.10 : x
  2. Step 2: Convert to fraction form
    615,200.70/921,807.45 = 348,167.10/x
  3. Step 3: Cross multiply
    615,200.70x = 921,807.45 × 348,167.10
  4. Step 4: Simplify right side
    615,200.70x = 320,943,026,624.90
  5. Step 5: Solve for x
    x = 320,943,026,624.90/615,200.70
  6. Step 6: Final answer
    x = 521,688.33

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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.