Home / 230,911.32-318,654.58-128,938.52

Finding the Fourth Proportional to 230,911.32, 318,654.58 and 128,938.52

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Solution

The fourth proportional to 230,911.32, 318,654.58 and 128,938.52 is: 177,933.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,911.32 : 318,654.58 = 128,938.52 : x
  2. Step 2: Convert to fraction form
    230,911.32/318,654.58 = 128,938.52/x
  3. Step 3: Cross multiply
    230,911.32x = 318,654.58 × 128,938.52
  4. Step 4: Simplify right side
    230,911.32x = 41,086,849,936.42
  5. Step 5: Solve for x
    x = 41,086,849,936.42/230,911.32
  6. Step 6: Final answer
    x = 177,933.46

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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.