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Finding the Fourth Proportional to 418,218.17, 627,324.48 and 118,698.93

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Solution

The fourth proportional to 418,218.17, 627,324.48 and 118,698.93 is: 178,047.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,218.17 : 627,324.48 = 118,698.93 : x
  2. Step 2: Convert to fraction form
    418,218.17/627,324.48 = 118,698.93/x
  3. Step 3: Cross multiply
    418,218.17x = 627,324.48 × 118,698.93
  4. Step 4: Simplify right side
    418,218.17x = 74,462,744,538.81
  5. Step 5: Solve for x
    x = 74,462,744,538.81/418,218.17
  6. Step 6: Final answer
    x = 178,047.61

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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.