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Finding the Fourth Proportional to 383,980.80, 575,697.92 and 147,123.20

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Solution

The fourth proportional to 383,980.80, 575,697.92 and 147,123.20 is: 220,580.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,980.80 : 575,697.92 = 147,123.20 : x
  2. Step 2: Convert to fraction form
    383,980.80/575,697.92 = 147,123.20/x
  3. Step 3: Cross multiply
    383,980.80x = 575,697.92 × 147,123.20
  4. Step 4: Simplify right side
    383,980.80x = 84,698,520,223.74
  5. Step 5: Solve for x
    x = 84,698,520,223.74/383,980.80
  6. Step 6: Final answer
    x = 220,580.09

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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.