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Finding the Fourth Proportional to 318,775.16, 439,912.59 and 175,535.78

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Solution

The fourth proportional to 318,775.16, 439,912.59 and 175,535.78 is: 242,240.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,775.16 : 439,912.59 = 175,535.78 : x
  2. Step 2: Convert to fraction form
    318,775.16/439,912.59 = 175,535.78/x
  3. Step 3: Cross multiply
    318,775.16x = 439,912.59 × 175,535.78
  4. Step 4: Simplify right side
    318,775.16x = 77,220,399,617.47
  5. Step 5: Solve for x
    x = 77,220,399,617.47/318,775.16
  6. Step 6: Final answer
    x = 242,240.96

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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.