Home / 256,398.16-384,789.29-96,631.68

Finding the Fourth Proportional to 256,398.16, 384,789.29 and 96,631.68

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Solution

The fourth proportional to 256,398.16, 384,789.29 and 96,631.68 is: 145,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,398.16 : 384,789.29 = 96,631.68 : x
  2. Step 2: Convert to fraction form
    256,398.16/384,789.29 = 96,631.68/x
  3. Step 3: Cross multiply
    256,398.16x = 384,789.29 × 96,631.68
  4. Step 4: Simplify right side
    256,398.16x = 37,182,836,498.51
  5. Step 5: Solve for x
    x = 37,182,836,498.51/256,398.16
  6. Step 6: Final answer
    x = 145,019.90

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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.