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Finding the Fourth Proportional to 388,117.80, 582,003.90 and 177,820.20

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Solution

The fourth proportional to 388,117.80, 582,003.90 and 177,820.20 is: 266,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,117.80 : 582,003.90 = 177,820.20 : x
  2. Step 2: Convert to fraction form
    388,117.80/582,003.90 = 177,820.20/x
  3. Step 3: Cross multiply
    388,117.80x = 582,003.90 × 177,820.20
  4. Step 4: Simplify right side
    388,117.80x = 103,492,049,898.78
  5. Step 5: Solve for x
    x = 103,492,049,898.78/388,117.80
  6. Step 6: Final answer
    x = 266,651.13

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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.