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Finding the Fourth Proportional to 286,870.70, 395,895.60 and 159,543.56

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Solution

The fourth proportional to 286,870.70, 395,895.60 and 159,543.56 is: 220,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,870.70 : 395,895.60 = 159,543.56 : x
  2. Step 2: Convert to fraction form
    286,870.70/395,895.60 = 159,543.56/x
  3. Step 3: Cross multiply
    286,870.70x = 395,895.60 × 159,543.56
  4. Step 4: Simplify right side
    286,870.70x = 63,162,594,402.08
  5. Step 5: Solve for x
    x = 63,162,594,402.08/286,870.70
  6. Step 6: Final answer
    x = 220,177.92

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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.