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Finding the Fourth Proportional to 260,439.50, 392,611.29 and 243,079.45

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Solution

The fourth proportional to 260,439.50, 392,611.29 and 243,079.45 is: 366,441.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,439.50 : 392,611.29 = 243,079.45 : x
  2. Step 2: Convert to fraction form
    260,439.50/392,611.29 = 243,079.45/x
  3. Step 3: Cross multiply
    260,439.50x = 392,611.29 × 243,079.45
  4. Step 4: Simplify right side
    260,439.50x = 95,435,734,543.91
  5. Step 5: Solve for x
    x = 95,435,734,543.91/260,439.50
  6. Step 6: Final answer
    x = 366,441.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.