Home / 418,720.47-628,081.05-103,177.41

Finding the Fourth Proportional to 418,720.47, 628,081.05 and 103,177.41

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Solution

The fourth proportional to 418,720.47, 628,081.05 and 103,177.41 is: 154,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,720.47 : 628,081.05 = 103,177.41 : x
  2. Step 2: Convert to fraction form
    418,720.47/628,081.05 = 103,177.41/x
  3. Step 3: Cross multiply
    418,720.47x = 628,081.05 × 103,177.41
  4. Step 4: Simplify right side
    418,720.47x = 64,803,776,009.08
  5. Step 5: Solve for x
    x = 64,803,776,009.08/418,720.47
  6. Step 6: Final answer
    x = 154,766.20

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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.