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Finding the Fourth Proportional to 388,240.80, 582,188.40 and 177,943.20

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Solution

The fourth proportional to 388,240.80, 582,188.40 and 177,943.20 is: 266,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,240.80 : 582,188.40 = 177,943.20 : x
  2. Step 2: Convert to fraction form
    388,240.80/582,188.40 = 177,943.20/x
  3. Step 3: Cross multiply
    388,240.80x = 582,188.40 × 177,943.20
  4. Step 4: Simplify right side
    388,240.80x = 103,596,466,898.88
  5. Step 5: Solve for x
    x = 103,596,466,898.88/388,240.80
  6. Step 6: Final answer
    x = 266,835.60

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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.