Home / 331,319.40-496,979.10-278,831.40

Finding the Fourth Proportional to 331,319.40, 496,979.10 and 278,831.40

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Solution

The fourth proportional to 331,319.40, 496,979.10 and 278,831.40 is: 418,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,319.40 : 496,979.10 = 278,831.40 : x
  2. Step 2: Convert to fraction form
    331,319.40/496,979.10 = 278,831.40/x
  3. Step 3: Cross multiply
    331,319.40x = 496,979.10 × 278,831.40
  4. Step 4: Simplify right side
    331,319.40x = 138,573,378,223.74
  5. Step 5: Solve for x
    x = 138,573,378,223.74/331,319.40
  6. Step 6: Final answer
    x = 418,247.10

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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.