Home / 331,340.40-497,010.60-213,145.20

Finding the Fourth Proportional to 331,340.40, 497,010.60 and 213,145.20

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Solution

The fourth proportional to 331,340.40, 497,010.60 and 213,145.20 is: 319,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,340.40 : 497,010.60 = 213,145.20 : x
  2. Step 2: Convert to fraction form
    331,340.40/497,010.60 = 213,145.20/x
  3. Step 3: Cross multiply
    331,340.40x = 497,010.60 × 213,145.20
  4. Step 4: Simplify right side
    331,340.40x = 105,935,423,739.12
  5. Step 5: Solve for x
    x = 105,935,423,739.12/331,340.40
  6. Step 6: Final answer
    x = 319,717.80

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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.