Home / 316,310.40-474,465.60-129,278.16

Finding the Fourth Proportional to 316,310.40, 474,465.60 and 129,278.16

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Solution

The fourth proportional to 316,310.40, 474,465.60 and 129,278.16 is: 193,917.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,310.40 : 474,465.60 = 129,278.16 : x
  2. Step 2: Convert to fraction form
    316,310.40/474,465.60 = 129,278.16/x
  3. Step 3: Cross multiply
    316,310.40x = 474,465.60 × 129,278.16
  4. Step 4: Simplify right side
    316,310.40x = 61,338,039,751.30
  5. Step 5: Solve for x
    x = 61,338,039,751.30/316,310.40
  6. Step 6: Final answer
    x = 193,917.24

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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.