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Finding the Fourth Proportional to 272,280.80, 408,226.80 and 153,988.40

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Solution

The fourth proportional to 272,280.80, 408,226.80 and 153,988.40 is: 230,872.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,280.80 : 408,226.80 = 153,988.40 : x
  2. Step 2: Convert to fraction form
    272,280.80/408,226.80 = 153,988.40/x
  3. Step 3: Cross multiply
    272,280.80x = 408,226.80 × 153,988.40
  4. Step 4: Simplify right side
    272,280.80x = 62,862,191,769.12
  5. Step 5: Solve for x
    x = 62,862,191,769.12/272,280.80
  6. Step 6: Final answer
    x = 230,872.66

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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.