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Finding the Fourth Proportional to 287,970.44, 432,038.57 and 88,320.11

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Solution

The fourth proportional to 287,970.44, 432,038.57 and 88,320.11 is: 132,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,970.44 : 432,038.57 = 88,320.11 : x
  2. Step 2: Convert to fraction form
    287,970.44/432,038.57 = 88,320.11/x
  3. Step 3: Cross multiply
    287,970.44x = 432,038.57 × 88,320.11
  4. Step 4: Simplify right side
    287,970.44x = 38,157,691,424.85
  5. Step 5: Solve for x
    x = 38,157,691,424.85/287,970.44
  6. Step 6: Final answer
    x = 132,505.59

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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.