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Finding the Fourth Proportional to 438,034.80, 657,052.20 and 105,610.80

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Solution

The fourth proportional to 438,034.80, 657,052.20 and 105,610.80 is: 158,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,034.80 : 657,052.20 = 105,610.80 : x
  2. Step 2: Convert to fraction form
    438,034.80/657,052.20 = 105,610.80/x
  3. Step 3: Cross multiply
    438,034.80x = 657,052.20 × 105,610.80
  4. Step 4: Simplify right side
    438,034.80x = 69,391,808,483.76
  5. Step 5: Solve for x
    x = 69,391,808,483.76/438,034.80
  6. Step 6: Final answer
    x = 158,416.20

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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.