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Finding the Fourth Proportional to 287,910.84, 431,929.44 and 88,246.26

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Solution

The fourth proportional to 287,910.84, 431,929.44 and 88,246.26 is: 132,388.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,910.84 : 431,929.44 = 88,246.26 : x
  2. Step 2: Convert to fraction form
    287,910.84/431,929.44 = 88,246.26/x
  3. Step 3: Cross multiply
    287,910.84x = 431,929.44 × 88,246.26
  4. Step 4: Simplify right side
    287,910.84x = 38,116,157,663.89
  5. Step 5: Solve for x
    x = 38,116,157,663.89/287,910.84
  6. Step 6: Final answer
    x = 132,388.76

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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.