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Finding the Fourth Proportional to 399,116.60, 598,674.90 and 162,337.40

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Solution

The fourth proportional to 399,116.60, 598,674.90 and 162,337.40 is: 243,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,116.60 : 598,674.90 = 162,337.40 : x
  2. Step 2: Convert to fraction form
    399,116.60/598,674.90 = 162,337.40/x
  3. Step 3: Cross multiply
    399,116.60x = 598,674.90 × 162,337.40
  4. Step 4: Simplify right side
    399,116.60x = 97,187,326,711.26
  5. Step 5: Solve for x
    x = 97,187,326,711.26/399,116.60
  6. Step 6: Final answer
    x = 243,506.10

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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.