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Finding the Fourth Proportional to 288,443.09, 432,705.65 and 88,780.12

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Solution

The fourth proportional to 288,443.09, 432,705.65 and 88,780.12 is: 133,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,443.09 : 432,705.65 = 88,780.12 : x
  2. Step 2: Convert to fraction form
    288,443.09/432,705.65 = 88,780.12/x
  3. Step 3: Cross multiply
    288,443.09x = 432,705.65 × 88,780.12
  4. Step 4: Simplify right side
    288,443.09x = 38,415,658,006.01
  5. Step 5: Solve for x
    x = 38,415,658,006.01/288,443.09
  6. Step 6: Final answer
    x = 133,182.80

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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.