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Finding the Fourth Proportional to 399,666.60, 599,390.55 and 163,033.20

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Solution

The fourth proportional to 399,666.60, 599,390.55 and 163,033.20 is: 244,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,666.60 : 599,390.55 = 163,033.20 : x
  2. Step 2: Convert to fraction form
    399,666.60/599,390.55 = 163,033.20/x
  3. Step 3: Cross multiply
    399,666.60x = 599,390.55 × 163,033.20
  4. Step 4: Simplify right side
    399,666.60x = 97,720,559,416.26
  5. Step 5: Solve for x
    x = 97,720,559,416.26/399,666.60
  6. Step 6: Final answer
    x = 244,505.19

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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.