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Finding the Fourth Proportional to 577,205.40, 865,808.10 and 156,480.60

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Solution

The fourth proportional to 577,205.40, 865,808.10 and 156,480.60 is: 234,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,205.40 : 865,808.10 = 156,480.60 : x
  2. Step 2: Convert to fraction form
    577,205.40/865,808.10 = 156,480.60/x
  3. Step 3: Cross multiply
    577,205.40x = 865,808.10 × 156,480.60
  4. Step 4: Simplify right side
    577,205.40x = 135,482,170,972.86
  5. Step 5: Solve for x
    x = 135,482,170,972.86/577,205.40
  6. Step 6: Final answer
    x = 234,720.90

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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.