Home / 331,521.18-497,278.09-198,438.58

Finding the Fourth Proportional to 331,521.18, 497,278.09 and 198,438.58

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Solution

The fourth proportional to 331,521.18, 497,278.09 and 198,438.58 is: 297,655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,521.18 : 497,278.09 = 198,438.58 : x
  2. Step 2: Convert to fraction form
    331,521.18/497,278.09 = 198,438.58/x
  3. Step 3: Cross multiply
    331,521.18x = 497,278.09 × 198,438.58
  4. Step 4: Simplify right side
    331,521.18x = 98,679,158,044.71
  5. Step 5: Solve for x
    x = 98,679,158,044.71/331,521.18
  6. Step 6: Final answer
    x = 297,655.67

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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.