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Finding the Fourth Proportional to 288,048.70, 432,073.05 and 188,515.90

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Solution

The fourth proportional to 288,048.70, 432,073.05 and 188,515.90 is: 282,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,048.70 : 432,073.05 = 188,515.90 : x
  2. Step 2: Convert to fraction form
    288,048.70/432,073.05 = 188,515.90/x
  3. Step 3: Cross multiply
    288,048.70x = 432,073.05 × 188,515.90
  4. Step 4: Simplify right side
    288,048.70x = 81,452,639,886.50
  5. Step 5: Solve for x
    x = 81,452,639,886.50/288,048.70
  6. Step 6: Final answer
    x = 282,773.85

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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.