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Finding the Fourth Proportional to 161,780.80, 242,671.20 and 156,337.60

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Solution

The fourth proportional to 161,780.80, 242,671.20 and 156,337.60 is: 234,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,780.80 : 242,671.20 = 156,337.60 : x
  2. Step 2: Convert to fraction form
    161,780.80/242,671.20 = 156,337.60/x
  3. Step 3: Cross multiply
    161,780.80x = 242,671.20 × 156,337.60
  4. Step 4: Simplify right side
    161,780.80x = 37,938,632,997.12
  5. Step 5: Solve for x
    x = 37,938,632,997.12/161,780.80
  6. Step 6: Final answer
    x = 234,506.40

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1.5x scale

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.