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Finding the Fourth Proportional to 386,501.20, 579,852.60 and 149,851.60

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Solution

The fourth proportional to 386,501.20, 579,852.60 and 149,851.60 is: 224,816.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,501.20 : 579,852.60 = 149,851.60 : x
  2. Step 2: Convert to fraction form
    386,501.20/579,852.60 = 149,851.60/x
  3. Step 3: Cross multiply
    386,501.20x = 579,852.60 × 149,851.60
  4. Step 4: Simplify right side
    386,501.20x = 86,891,839,874.16
  5. Step 5: Solve for x
    x = 86,891,839,874.16/386,501.20
  6. Step 6: Final answer
    x = 224,816.48

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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.