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Finding the Fourth Proportional to 371,530.80, 557,120.52 and 143,933.04

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Solution

The fourth proportional to 371,530.80, 557,120.52 and 143,933.04 is: 215,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,530.80 : 557,120.52 = 143,933.04 : x
  2. Step 2: Convert to fraction form
    371,530.80/557,120.52 = 143,933.04/x
  3. Step 3: Cross multiply
    371,530.80x = 557,120.52 × 143,933.04
  4. Step 4: Simplify right side
    371,530.80x = 80,188,050,089.98
  5. Step 5: Solve for x
    x = 80,188,050,089.98/371,530.80
  6. Step 6: Final answer
    x = 215,831.50

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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.