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Finding the Fourth Proportional to 272,338.80, 408,070.80 and 256,592.40

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Solution

The fourth proportional to 272,338.80, 408,070.80 and 256,592.40 is: 384,476.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,338.80 : 408,070.80 = 256,592.40 : x
  2. Step 2: Convert to fraction form
    272,338.80/408,070.80 = 256,592.40/x
  3. Step 3: Cross multiply
    272,338.80x = 408,070.80 × 256,592.40
  4. Step 4: Simplify right side
    272,338.80x = 104,707,865,941.92
  5. Step 5: Solve for x
    x = 104,707,865,941.92/272,338.80
  6. Step 6: Final answer
    x = 384,476.49

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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.