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Finding the Fourth Proportional to 261,245.59, 391,903.32 and 103,437.14

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Solution

The fourth proportional to 261,245.59, 391,903.32 and 103,437.14 is: 155,169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,245.59 : 391,903.32 = 103,437.14 : x
  2. Step 2: Convert to fraction form
    261,245.59/391,903.32 = 103,437.14/x
  3. Step 3: Cross multiply
    261,245.59x = 391,903.32 × 103,437.14
  4. Step 4: Simplify right side
    261,245.59x = 40,537,358,577.30
  5. Step 5: Solve for x
    x = 40,537,358,577.30/261,245.59
  6. Step 6: Final answer
    x = 155,169.54

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1.5x scale

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.