Home / 261,757.98-392,645.07-72,221.63

Finding the Fourth Proportional to 261,757.98, 392,645.07 and 72,221.63

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Solution

The fourth proportional to 261,757.98, 392,645.07 and 72,221.63 is: 108,334.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,757.98 : 392,645.07 = 72,221.63 : x
  2. Step 2: Convert to fraction form
    261,757.98/392,645.07 = 72,221.63/x
  3. Step 3: Cross multiply
    261,757.98x = 392,645.07 × 72,221.63
  4. Step 4: Simplify right side
    261,757.98x = 28,357,465,003.64
  5. Step 5: Solve for x
    x = 28,357,465,003.64/261,757.98
  6. Step 6: Final answer
    x = 108,334.67

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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.