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Finding the Fourth Proportional to 261,484.70, 391,882.39 and 103,627.02

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Solution

The fourth proportional to 261,484.70, 391,882.39 and 103,627.02 is: 155,303.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,484.70 : 391,882.39 = 103,627.02 : x
  2. Step 2: Convert to fraction form
    261,484.70/391,882.39 = 103,627.02/x
  3. Step 3: Cross multiply
    261,484.70x = 391,882.39 × 103,627.02
  4. Step 4: Simplify right side
    261,484.70x = 40,609,604,266.18
  5. Step 5: Solve for x
    x = 40,609,604,266.18/261,484.70
  6. Step 6: Final answer
    x = 155,303.94

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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.