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Finding the Fourth Proportional to 318,670.40, 439,758.24 and 175,424.96

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Solution

The fourth proportional to 318,670.40, 439,758.24 and 175,424.96 is: 242,082.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,670.40 : 439,758.24 = 175,424.96 : x
  2. Step 2: Convert to fraction form
    318,670.40/439,758.24 = 175,424.96/x
  3. Step 3: Cross multiply
    318,670.40x = 439,758.24 × 175,424.96
  4. Step 4: Simplify right side
    318,670.40x = 77,144,571,661.67
  5. Step 5: Solve for x
    x = 77,144,571,661.67/318,670.40
  6. Step 6: Final answer
    x = 242,082.64

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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.