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Finding the Fourth Proportional to 318,883.40, 440,059.02 and 175,643.43

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Solution

The fourth proportional to 318,883.40, 440,059.02 and 175,643.43 is: 242,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,883.40 : 440,059.02 = 175,643.43 : x
  2. Step 2: Convert to fraction form
    318,883.40/440,059.02 = 175,643.43/x
  3. Step 3: Cross multiply
    318,883.40x = 440,059.02 × 175,643.43
  4. Step 4: Simplify right side
    318,883.40x = 77,293,475,675.24
  5. Step 5: Solve for x
    x = 77,293,475,675.24/318,883.40
  6. Step 6: Final answer
    x = 242,387.90

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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.