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Finding the Fourth Proportional to 318,648.33, 439,750.49 and 175,406.85

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Solution

The fourth proportional to 318,648.33, 439,750.49 and 175,406.85 is: 242,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,648.33 : 439,750.49 = 175,406.85 : x
  2. Step 2: Convert to fraction form
    318,648.33/439,750.49 = 175,406.85/x
  3. Step 3: Cross multiply
    318,648.33x = 439,750.49 × 175,406.85
  4. Step 4: Simplify right side
    318,648.33x = 77,135,247,359.82
  5. Step 5: Solve for x
    x = 77,135,247,359.82/318,648.33
  6. Step 6: Final answer
    x = 242,070.14

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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.