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Finding the Fourth Proportional to 388,283.40, 582,425.10 and 371,346.30

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Solution

The fourth proportional to 388,283.40, 582,425.10 and 371,346.30 is: 557,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,283.40 : 582,425.10 = 371,346.30 : x
  2. Step 2: Convert to fraction form
    388,283.40/582,425.10 = 371,346.30/x
  3. Step 3: Cross multiply
    388,283.40x = 582,425.10 × 371,346.30
  4. Step 4: Simplify right side
    388,283.40x = 216,281,405,912.13
  5. Step 5: Solve for x
    x = 216,281,405,912.13/388,283.40
  6. Step 6: Final answer
    x = 557,019.45

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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.