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Finding the Fourth Proportional to 388,053.72, 582,202.08 and 246,780

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Solution

The fourth proportional to 388,053.72, 582,202.08 and 246,780 is: 370,247.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,053.72 : 582,202.08 = 246,780 : x
  2. Step 2: Convert to fraction form
    388,053.72/582,202.08 = 246,780/x
  3. Step 3: Cross multiply
    388,053.72x = 582,202.08 × 246,780
  4. Step 4: Simplify right side
    388,053.72x = 143,675,829,302.40
  5. Step 5: Solve for x
    x = 143,675,829,302.40/388,053.72
  6. Step 6: Final answer
    x = 370,247.27

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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.