Home / 287,175.98-430,764.09-129,219.92

Finding the Fourth Proportional to 287,175.98, 430,764.09 and 129,219.92

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Solution

The fourth proportional to 287,175.98, 430,764.09 and 129,219.92 is: 193,829.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,175.98 : 430,764.09 = 129,219.92 : x
  2. Step 2: Convert to fraction form
    287,175.98/430,764.09 = 129,219.92/x
  3. Step 3: Cross multiply
    287,175.98x = 430,764.09 × 129,219.92
  4. Step 4: Simplify right side
    287,175.98x = 55,663,301,248.67
  5. Step 5: Solve for x
    x = 55,663,301,248.67/287,175.98
  6. Step 6: Final answer
    x = 193,829.93

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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.