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Finding the Fourth Proportional to 386,681.60, 579,849.60 and 149,945.60

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Solution

The fourth proportional to 386,681.60, 579,849.60 and 149,945.60 is: 224,851.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,681.60 : 579,849.60 = 149,945.60 : x
  2. Step 2: Convert to fraction form
    386,681.60/579,849.60 = 149,945.60/x
  3. Step 3: Cross multiply
    386,681.60x = 579,849.60 × 149,945.60
  4. Step 4: Simplify right side
    386,681.60x = 86,945,896,181.76
  5. Step 5: Solve for x
    x = 86,945,896,181.76/386,681.60
  6. Step 6: Final answer
    x = 224,851.39

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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.