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Finding the Fourth Proportional to 318,959.21, 478,110.22 and 141,549.77

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Solution

The fourth proportional to 318,959.21, 478,110.22 and 141,549.77 is: 212,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,959.21 : 478,110.22 = 141,549.77 : x
  2. Step 2: Convert to fraction form
    318,959.21/478,110.22 = 141,549.77/x
  3. Step 3: Cross multiply
    318,959.21x = 478,110.22 × 141,549.77
  4. Step 4: Simplify right side
    318,959.21x = 67,676,391,675.65
  5. Step 5: Solve for x
    x = 67,676,391,675.65/318,959.21
  6. Step 6: Final answer
    x = 212,178.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.