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Finding the Fourth Proportional to 261,408.60, 392,242.62 and 103,633.56

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Solution

The fourth proportional to 261,408.60, 392,242.62 and 103,633.56 is: 155,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,408.60 : 392,242.62 = 103,633.56 : x
  2. Step 2: Convert to fraction form
    261,408.60/392,242.62 = 103,633.56/x
  3. Step 3: Cross multiply
    261,408.60x = 392,242.62 × 103,633.56
  4. Step 4: Simplify right side
    261,408.60x = 40,649,499,094.33
  5. Step 5: Solve for x
    x = 40,649,499,094.33/261,408.60
  6. Step 6: Final answer
    x = 155,501.77

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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.