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Finding the Fourth Proportional to 418,373.12, 577,359.42 and 227,386.56

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Solution

The fourth proportional to 418,373.12, 577,359.42 and 227,386.56 is: 313,795.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,373.12 : 577,359.42 = 227,386.56 : x
  2. Step 2: Convert to fraction form
    418,373.12/577,359.42 = 227,386.56/x
  3. Step 3: Cross multiply
    418,373.12x = 577,359.42 × 227,386.56
  4. Step 4: Simplify right side
    418,373.12x = 131,283,772,397.40
  5. Step 5: Solve for x
    x = 131,283,772,397.40/418,373.12
  6. Step 6: Final answer
    x = 313,795.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.