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Finding the Fourth Proportional to 452,738.54, 679,173 and 137,220.02

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Solution

The fourth proportional to 452,738.54, 679,173 and 137,220.02 is: 205,849.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,738.54 : 679,173 = 137,220.02 : x
  2. Step 2: Convert to fraction form
    452,738.54/679,173 = 137,220.02/x
  3. Step 3: Cross multiply
    452,738.54x = 679,173 × 137,220.02
  4. Step 4: Simplify right side
    452,738.54x = 93,196,132,643.46
  5. Step 5: Solve for x
    x = 93,196,132,643.46/452,738.54
  6. Step 6: Final answer
    x = 205,849.79

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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.