Home / 318,925.22-478,405.29-129,357.44

Finding the Fourth Proportional to 318,925.22, 478,405.29 and 129,357.44

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Solution

The fourth proportional to 318,925.22, 478,405.29 and 129,357.44 is: 194,043.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,925.22 : 478,405.29 = 129,357.44 : x
  2. Step 2: Convert to fraction form
    318,925.22/478,405.29 = 129,357.44/x
  3. Step 3: Cross multiply
    318,925.22x = 478,405.29 × 129,357.44
  4. Step 4: Simplify right side
    318,925.22x = 61,885,283,596.86
  5. Step 5: Solve for x
    x = 61,885,283,596.86/318,925.22
  6. Step 6: Final answer
    x = 194,043.24

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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.