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Finding the Fourth Proportional to 191,276.20, 286,914.30 and 102,702.70

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Solution

The fourth proportional to 191,276.20, 286,914.30 and 102,702.70 is: 154,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,276.20 : 286,914.30 = 102,702.70 : x
  2. Step 2: Convert to fraction form
    191,276.20/286,914.30 = 102,702.70/x
  3. Step 3: Cross multiply
    191,276.20x = 286,914.30 × 102,702.70
  4. Step 4: Simplify right side
    191,276.20x = 29,466,873,278.61
  5. Step 5: Solve for x
    x = 29,466,873,278.61/191,276.20
  6. Step 6: Final answer
    x = 154,054.05

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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.