Home / 421,267.46-631,901.19-140,784.71

Finding the Fourth Proportional to 421,267.46, 631,901.19 and 140,784.71

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Solution

The fourth proportional to 421,267.46, 631,901.19 and 140,784.71 is: 211,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,267.46 : 631,901.19 = 140,784.71 : x
  2. Step 2: Convert to fraction form
    421,267.46/631,901.19 = 140,784.71/x
  3. Step 3: Cross multiply
    421,267.46x = 631,901.19 × 140,784.71
  4. Step 4: Simplify right side
    421,267.46x = 88,962,025,782.80
  5. Step 5: Solve for x
    x = 88,962,025,782.80/421,267.46
  6. Step 6: Final answer
    x = 211,177.07

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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.