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Finding the Fourth Proportional to 272,059.88, 408,730.16 and 256,954.20

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Solution

The fourth proportional to 272,059.88, 408,730.16 and 256,954.20 is: 386,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,059.88 : 408,730.16 = 256,954.20 : x
  2. Step 2: Convert to fraction form
    272,059.88/408,730.16 = 256,954.20/x
  3. Step 3: Cross multiply
    272,059.88x = 408,730.16 × 256,954.20
  4. Step 4: Simplify right side
    272,059.88x = 105,024,931,278.67
  5. Step 5: Solve for x
    x = 105,024,931,278.67/272,059.88
  6. Step 6: Final answer
    x = 386,036.09

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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.