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Finding the Fourth Proportional to 287,888.76, 431,888.49 and 110,381.92

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Solution

The fourth proportional to 287,888.76, 431,888.49 and 110,381.92 is: 165,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,888.76 : 431,888.49 = 110,381.92 : x
  2. Step 2: Convert to fraction form
    287,888.76/431,888.49 = 110,381.92/x
  3. Step 3: Cross multiply
    287,888.76x = 431,888.49 × 110,381.92
  4. Step 4: Simplify right side
    287,888.76x = 47,672,680,752.10
  5. Step 5: Solve for x
    x = 47,672,680,752.10/287,888.76
  6. Step 6: Final answer
    x = 165,594.10

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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.