Home / 318,927.40-478,218.30-131,957.80

Finding the Fourth Proportional to 318,927.40, 478,218.30 and 131,957.80

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Solution

The fourth proportional to 318,927.40, 478,218.30 and 131,957.80 is: 197,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,927.40 : 478,218.30 = 131,957.80 : x
  2. Step 2: Convert to fraction form
    318,927.40/478,218.30 = 131,957.80/x
  3. Step 3: Cross multiply
    318,927.40x = 478,218.30 × 131,957.80
  4. Step 4: Simplify right side
    318,927.40x = 63,104,634,787.74
  5. Step 5: Solve for x
    x = 63,104,634,787.74/318,927.40
  6. Step 6: Final answer
    x = 197,865.20

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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.