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Finding the Fourth Proportional to 318,900.70, 440,082.36 and 175,670.38

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Solution

The fourth proportional to 318,900.70, 440,082.36 and 175,670.38 is: 242,424.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,900.70 : 440,082.36 = 175,670.38 : x
  2. Step 2: Convert to fraction form
    318,900.70/440,082.36 = 175,670.38/x
  3. Step 3: Cross multiply
    318,900.70x = 440,082.36 × 175,670.38
  4. Step 4: Simplify right side
    318,900.70x = 77,309,435,412.50
  5. Step 5: Solve for x
    x = 77,309,435,412.50/318,900.70
  6. Step 6: Final answer
    x = 242,424.79

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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.