Home / 261,914.16-392,873.72-143,520.87

Finding the Fourth Proportional to 261,914.16, 392,873.72 and 143,520.87

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Solution

The fourth proportional to 261,914.16, 392,873.72 and 143,520.87 is: 215,282.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,914.16 : 392,873.72 = 143,520.87 : x
  2. Step 2: Convert to fraction form
    261,914.16/392,873.72 = 143,520.87/x
  3. Step 3: Cross multiply
    261,914.16x = 392,873.72 × 143,520.87
  4. Step 4: Simplify right side
    261,914.16x = 56,385,577,376.93
  5. Step 5: Solve for x
    x = 56,385,577,376.93/261,914.16
  6. Step 6: Final answer
    x = 215,282.66

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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.