Home / 421,412.49-631,986.98-140,864.13

Finding the Fourth Proportional to 421,412.49, 631,986.98 and 140,864.13

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Solution

The fourth proportional to 421,412.49, 631,986.98 and 140,864.13 is: 211,252.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,412.49 : 631,986.98 = 140,864.13 : x
  2. Step 2: Convert to fraction form
    421,412.49/631,986.98 = 140,864.13/x
  3. Step 3: Cross multiply
    421,412.49x = 631,986.98 × 140,864.13
  4. Step 4: Simplify right side
    421,412.49x = 89,024,295,404.71
  5. Step 5: Solve for x
    x = 89,024,295,404.71/421,412.49
  6. Step 6: Final answer
    x = 211,252.15

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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.