Home / 217,148.32-325,612.40-76,887.20

Finding the Fourth Proportional to 217,148.32, 325,612.40 and 76,887.20

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Solution

The fourth proportional to 217,148.32, 325,612.40 and 76,887.20 is: 115,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,148.32 : 325,612.40 = 76,887.20 : x
  2. Step 2: Convert to fraction form
    217,148.32/325,612.40 = 76,887.20/x
  3. Step 3: Cross multiply
    217,148.32x = 325,612.40 × 76,887.20
  4. Step 4: Simplify right side
    217,148.32x = 25,035,425,721.28
  5. Step 5: Solve for x
    x = 25,035,425,721.28/217,148.32
  6. Step 6: Final answer
    x = 115,291.82

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1.5x scale

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.