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Finding the Fourth Proportional to 458,869.60, 688,304.40 and 299,437.30

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Solution

The fourth proportional to 458,869.60, 688,304.40 and 299,437.30 is: 449,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,869.60 : 688,304.40 = 299,437.30 : x
  2. Step 2: Convert to fraction form
    458,869.60/688,304.40 = 299,437.30/x
  3. Step 3: Cross multiply
    458,869.60x = 688,304.40 × 299,437.30
  4. Step 4: Simplify right side
    458,869.60x = 206,104,011,114.12
  5. Step 5: Solve for x
    x = 206,104,011,114.12/458,869.60
  6. Step 6: Final answer
    x = 449,155.95

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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.