Home / 286,734.56-395,671.28-159,402.40

Finding the Fourth Proportional to 286,734.56, 395,671.28 and 159,402.40

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Solution

The fourth proportional to 286,734.56, 395,671.28 and 159,402.40 is: 219,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,734.56 : 395,671.28 = 159,402.40 : x
  2. Step 2: Convert to fraction form
    286,734.56/395,671.28 = 159,402.40/x
  3. Step 3: Cross multiply
    286,734.56x = 395,671.28 × 159,402.40
  4. Step 4: Simplify right side
    286,734.56x = 63,070,951,643.07
  5. Step 5: Solve for x
    x = 63,070,951,643.07/286,734.56
  6. Step 6: Final answer
    x = 219,962.85

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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.