Home / 420,848.68-631,291.76-154,463.87

Finding the Fourth Proportional to 420,848.68, 631,291.76 and 154,463.87

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Solution

The fourth proportional to 420,848.68, 631,291.76 and 154,463.87 is: 231,702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,848.68 : 631,291.76 = 154,463.87 : x
  2. Step 2: Convert to fraction form
    420,848.68/631,291.76 = 154,463.87/x
  3. Step 3: Cross multiply
    420,848.68x = 631,291.76 × 154,463.87
  4. Step 4: Simplify right side
    420,848.68x = 97,511,768,348.71
  5. Step 5: Solve for x
    x = 97,511,768,348.71/420,848.68
  6. Step 6: Final answer
    x = 231,702.68

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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.