Home / 206,928.97-310,787.13-128,590.63

Finding the Fourth Proportional to 206,928.97, 310,787.13 and 128,590.63

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Solution

The fourth proportional to 206,928.97, 310,787.13 and 128,590.63 is: 193,130.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,928.97 : 310,787.13 = 128,590.63 : x
  2. Step 2: Convert to fraction form
    206,928.97/310,787.13 = 128,590.63/x
  3. Step 3: Cross multiply
    206,928.97x = 310,787.13 × 128,590.63
  4. Step 4: Simplify right side
    206,928.97x = 39,964,312,842.59
  5. Step 5: Solve for x
    x = 39,964,312,842.59/206,928.97
  6. Step 6: Final answer
    x = 193,130.58

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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.