Home / 287,670.20-431,508.96-110,187.86

Finding the Fourth Proportional to 287,670.20, 431,508.96 and 110,187.86

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Solution

The fourth proportional to 287,670.20, 431,508.96 and 110,187.86 is: 165,283.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,670.20 : 431,508.96 = 110,187.86 : x
  2. Step 2: Convert to fraction form
    287,670.20/431,508.96 = 110,187.86/x
  3. Step 3: Cross multiply
    287,670.20x = 431,508.96 × 110,187.86
  4. Step 4: Simplify right side
    287,670.20x = 47,547,046,715.68
  5. Step 5: Solve for x
    x = 47,547,046,715.68/287,670.20
  6. Step 6: Final answer
    x = 165,283.19

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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.