Home / 230,948.27-318,702.39-128,970.89

Finding the Fourth Proportional to 230,948.27, 318,702.39 and 128,970.89

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Solution

The fourth proportional to 230,948.27, 318,702.39 and 128,970.89 is: 177,976.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,948.27 : 318,702.39 = 128,970.89 : x
  2. Step 2: Convert to fraction form
    230,948.27/318,702.39 = 128,970.89/x
  3. Step 3: Cross multiply
    230,948.27x = 318,702.39 × 128,970.89
  4. Step 4: Simplify right side
    230,948.27x = 41,103,330,883.43
  5. Step 5: Solve for x
    x = 41,103,330,883.43/230,948.27
  6. Step 6: Final answer
    x = 177,976.35

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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.