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Finding the Fourth Proportional to 291,669.80, 437,601.90 and 142,003.40

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Solution

The fourth proportional to 291,669.80, 437,601.90 and 142,003.40 is: 213,052.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,669.80 : 437,601.90 = 142,003.40 : x
  2. Step 2: Convert to fraction form
    291,669.80/437,601.90 = 142,003.40/x
  3. Step 3: Cross multiply
    291,669.80x = 437,601.90 × 142,003.40
  4. Step 4: Simplify right side
    291,669.80x = 62,140,957,646.46
  5. Step 5: Solve for x
    x = 62,140,957,646.46/291,669.80
  6. Step 6: Final answer
    x = 213,052.42

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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.