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Finding the Fourth Proportional to 338,432.70, 507,649.05 and 101,811.90

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Solution

The fourth proportional to 338,432.70, 507,649.05 and 101,811.90 is: 152,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,432.70 : 507,649.05 = 101,811.90 : x
  2. Step 2: Convert to fraction form
    338,432.70/507,649.05 = 101,811.90/x
  3. Step 3: Cross multiply
    338,432.70x = 507,649.05 × 101,811.90
  4. Step 4: Simplify right side
    338,432.70x = 51,684,714,313.70
  5. Step 5: Solve for x
    x = 51,684,714,313.70/338,432.70
  6. Step 6: Final answer
    x = 152,717.85

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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.