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Finding the Fourth Proportional to 317,876.76, 437,886.54 and 272,408.76

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Solution

The fourth proportional to 317,876.76, 437,886.54 and 272,408.76 is: 375,252.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,876.76 : 437,886.54 = 272,408.76 : x
  2. Step 2: Convert to fraction form
    317,876.76/437,886.54 = 272,408.76/x
  3. Step 3: Cross multiply
    317,876.76x = 437,886.54 × 272,408.76
  4. Step 4: Simplify right side
    317,876.76x = 119,284,129,382.09
  5. Step 5: Solve for x
    x = 119,284,129,382.09/317,876.76
  6. Step 6: Final answer
    x = 375,252.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.