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Finding the Fourth Proportional to 354,777.11, 532,235.77 and 130,139.64

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Solution

The fourth proportional to 354,777.11, 532,235.77 and 130,139.64 is: 195,235.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,777.11 : 532,235.77 = 130,139.64 : x
  2. Step 2: Convert to fraction form
    354,777.11/532,235.77 = 130,139.64/x
  3. Step 3: Cross multiply
    354,777.11x = 532,235.77 × 130,139.64
  4. Step 4: Simplify right side
    354,777.11x = 69,264,971,502.92
  5. Step 5: Solve for x
    x = 69,264,971,502.92/354,777.11
  6. Step 6: Final answer
    x = 195,235.18

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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.