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Finding the Fourth Proportional to 161,998.80, 242,998.20 and 155,000.40

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Solution

The fourth proportional to 161,998.80, 242,998.20 and 155,000.40 is: 232,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,998.80 : 242,998.20 = 155,000.40 : x
  2. Step 2: Convert to fraction form
    161,998.80/242,998.20 = 155,000.40/x
  3. Step 3: Cross multiply
    161,998.80x = 242,998.20 × 155,000.40
  4. Step 4: Simplify right side
    161,998.80x = 37,664,818,199.28
  5. Step 5: Solve for x
    x = 37,664,818,199.28/161,998.80
  6. Step 6: Final answer
    x = 232,500.60

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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.