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Finding the Fourth Proportional to 318,920.49, 440,115.57 and 175,680.68

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Solution

The fourth proportional to 318,920.49, 440,115.57 and 175,680.68 is: 242,442.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,920.49 : 440,115.57 = 175,680.68 : x
  2. Step 2: Convert to fraction form
    318,920.49/440,115.57 = 175,680.68/x
  3. Step 3: Cross multiply
    318,920.49x = 440,115.57 × 175,680.68
  4. Step 4: Simplify right side
    318,920.49x = 77,319,800,415.61
  5. Step 5: Solve for x
    x = 77,319,800,415.61/318,920.49
  6. Step 6: Final answer
    x = 242,442.25

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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.