Home / 261,865.47-392,970.46-143,619.85

Finding the Fourth Proportional to 261,865.47, 392,970.46 and 143,619.85

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Solution

The fourth proportional to 261,865.47, 392,970.46 and 143,619.85 is: 215,524.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,865.47 : 392,970.46 = 143,619.85 : x
  2. Step 2: Convert to fraction form
    261,865.47/392,970.46 = 143,619.85/x
  3. Step 3: Cross multiply
    261,865.47x = 392,970.46 × 143,619.85
  4. Step 4: Simplify right side
    261,865.47x = 56,438,357,178.16
  5. Step 5: Solve for x
    x = 56,438,357,178.16/261,865.47
  6. Step 6: Final answer
    x = 215,524.24

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1.5x scale

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.