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Finding the Fourth Proportional to 261,023.04, 391,259.16 and 103,034.16

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Solution

The fourth proportional to 261,023.04, 391,259.16 and 103,034.16 is: 154,442.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,023.04 : 391,259.16 = 103,034.16 : x
  2. Step 2: Convert to fraction form
    261,023.04/391,259.16 = 103,034.16/x
  3. Step 3: Cross multiply
    261,023.04x = 391,259.16 × 103,034.16
  4. Step 4: Simplify right side
    261,023.04x = 40,313,058,892.91
  5. Step 5: Solve for x
    x = 40,313,058,892.91/261,023.04
  6. Step 6: Final answer
    x = 154,442.53

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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.