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Finding the Fourth Proportional to 318,901.62, 440,064.45 and 175,653.66

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Solution

The fourth proportional to 318,901.62, 440,064.45 and 175,653.66 is: 242,391.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,901.62 : 440,064.45 = 175,653.66 : x
  2. Step 2: Convert to fraction form
    318,901.62/440,064.45 = 175,653.66/x
  3. Step 3: Cross multiply
    318,901.62x = 440,064.45 × 175,653.66
  4. Step 4: Simplify right side
    318,901.62x = 77,298,931,278.39
  5. Step 5: Solve for x
    x = 77,298,931,278.39/318,901.62
  6. Step 6: Final answer
    x = 242,391.15

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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.