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Finding the Fourth Proportional to 162,439.80, 243,659.70 and 155,441.40

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Solution

The fourth proportional to 162,439.80, 243,659.70 and 155,441.40 is: 233,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,439.80 : 243,659.70 = 155,441.40 : x
  2. Step 2: Convert to fraction form
    162,439.80/243,659.70 = 155,441.40/x
  3. Step 3: Cross multiply
    162,439.80x = 243,659.70 × 155,441.40
  4. Step 4: Simplify right side
    162,439.80x = 37,874,804,891.58
  5. Step 5: Solve for x
    x = 37,874,804,891.58/162,439.80
  6. Step 6: Final answer
    x = 233,162.10

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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.