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Finding the Fourth Proportional to 318,877.02, 478,315.53 and 277,819.74

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Solution

The fourth proportional to 318,877.02, 478,315.53 and 277,819.74 is: 416,729.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,877.02 : 478,315.53 = 277,819.74 : x
  2. Step 2: Convert to fraction form
    318,877.02/478,315.53 = 277,819.74/x
  3. Step 3: Cross multiply
    318,877.02x = 478,315.53 × 277,819.74
  4. Step 4: Simplify right side
    318,877.02x = 132,885,496,182.56
  5. Step 5: Solve for x
    x = 132,885,496,182.56/318,877.02
  6. Step 6: Final answer
    x = 416,729.61

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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.