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Finding the Fourth Proportional to 388,894.77, 582,941.51 and 148,943.21

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Solution

The fourth proportional to 388,894.77, 582,941.51 and 148,943.21 is: 223,261.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,894.77 : 582,941.51 = 148,943.21 : x
  2. Step 2: Convert to fraction form
    388,894.77/582,941.51 = 148,943.21/x
  3. Step 3: Cross multiply
    388,894.77x = 582,941.51 × 148,943.21
  4. Step 4: Simplify right side
    388,894.77x = 86,825,176,640.76
  5. Step 5: Solve for x
    x = 86,825,176,640.76/388,894.77
  6. Step 6: Final answer
    x = 223,261.36

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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.