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Finding the Fourth Proportional to 382,069.32, 572,953.86 and 129,280.20

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Solution

The fourth proportional to 382,069.32, 572,953.86 and 129,280.20 is: 193,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,069.32 : 572,953.86 = 129,280.20 : x
  2. Step 2: Convert to fraction form
    382,069.32/572,953.86 = 129,280.20/x
  3. Step 3: Cross multiply
    382,069.32x = 572,953.86 × 129,280.20
  4. Step 4: Simplify right side
    382,069.32x = 74,071,589,611.57
  5. Step 5: Solve for x
    x = 74,071,589,611.57/382,069.32
  6. Step 6: Final answer
    x = 193,869.50

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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.