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Finding the Fourth Proportional to 383,800.76, 575,298.98 and 215,073.72

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Solution

The fourth proportional to 383,800.76, 575,298.98 and 215,073.72 is: 322,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,800.76 : 575,298.98 = 215,073.72 : x
  2. Step 2: Convert to fraction form
    383,800.76/575,298.98 = 215,073.72/x
  3. Step 3: Cross multiply
    383,800.76x = 575,298.98 × 215,073.72
  4. Step 4: Simplify right side
    383,800.76x = 123,731,691,740.81
  5. Step 5: Solve for x
    x = 123,731,691,740.81/383,800.76
  6. Step 6: Final answer
    x = 322,385.22

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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.