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Finding the Fourth Proportional to 318,695.55, 439,791.32 and 175,456.67

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Solution

The fourth proportional to 318,695.55, 439,791.32 and 175,456.67 is: 242,125.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,695.55 : 439,791.32 = 175,456.67 : x
  2. Step 2: Convert to fraction form
    318,695.55/439,791.32 = 175,456.67/x
  3. Step 3: Cross multiply
    318,695.55x = 439,791.32 × 175,456.67
  4. Step 4: Simplify right side
    318,695.55x = 77,164,320,502.10
  5. Step 5: Solve for x
    x = 77,164,320,502.10/318,695.55
  6. Step 6: Final answer
    x = 242,125.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.