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Finding the Fourth Proportional to 388,042.60, 581,603.10 and 163,402.60

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Solution

The fourth proportional to 388,042.60, 581,603.10 and 163,402.60 is: 244,909.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,042.60 : 581,603.10 = 163,402.60 : x
  2. Step 2: Convert to fraction form
    388,042.60/581,603.10 = 163,402.60/x
  3. Step 3: Cross multiply
    388,042.60x = 581,603.10 × 163,402.60
  4. Step 4: Simplify right side
    388,042.60x = 95,035,458,708.06
  5. Step 5: Solve for x
    x = 95,035,458,708.06/388,042.60
  6. Step 6: Final answer
    x = 244,909.86

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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.