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Finding the Fourth Proportional to 261,054, 391,581.36 and 113,310

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Solution

The fourth proportional to 261,054, 391,581.36 and 113,310 is: 169,965.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,054 : 391,581.36 = 113,310 : x
  2. Step 2: Convert to fraction form
    261,054/391,581.36 = 113,310/x
  3. Step 3: Cross multiply
    261,054x = 391,581.36 × 113,310
  4. Step 4: Simplify right side
    261,054x = 44,370,083,901.60
  5. Step 5: Solve for x
    x = 44,370,083,901.60/261,054
  6. Step 6: Final answer
    x = 169,965.16

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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.