Home / 230,836.48-318,553-128,856.04

Finding the Fourth Proportional to 230,836.48, 318,553 and 128,856.04

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Solution

The fourth proportional to 230,836.48, 318,553 and 128,856.04 is: 177,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,836.48 : 318,553 = 128,856.04 : x
  2. Step 2: Convert to fraction form
    230,836.48/318,553 = 128,856.04/x
  3. Step 3: Cross multiply
    230,836.48x = 318,553 × 128,856.04
  4. Step 4: Simplify right side
    230,836.48x = 41,047,478,110.12
  5. Step 5: Solve for x
    x = 41,047,478,110.12/230,836.48
  6. Step 6: Final answer
    x = 177,820.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.