Home / 316,976.64-474,998.40-139,320.96

Finding the Fourth Proportional to 316,976.64, 474,998.40 and 139,320.96

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Solution

The fourth proportional to 316,976.64, 474,998.40 and 139,320.96 is: 208,776.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,976.64 : 474,998.40 = 139,320.96 : x
  2. Step 2: Convert to fraction form
    316,976.64/474,998.40 = 139,320.96/x
  3. Step 3: Cross multiply
    316,976.64x = 474,998.40 × 139,320.96
  4. Step 4: Simplify right side
    316,976.64x = 66,177,233,086.46
  5. Step 5: Solve for x
    x = 66,177,233,086.46/316,976.64
  6. Step 6: Final answer
    x = 208,776.37

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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.