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Finding the Fourth Proportional to 418,424.47, 627,601.15 and 165,636.23

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Solution

The fourth proportional to 418,424.47, 627,601.15 and 165,636.23 is: 248,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,424.47 : 627,601.15 = 165,636.23 : x
  2. Step 2: Convert to fraction form
    418,424.47/627,601.15 = 165,636.23/x
  3. Step 3: Cross multiply
    418,424.47x = 627,601.15 × 165,636.23
  4. Step 4: Simplify right side
    418,424.47x = 103,953,488,429.67
  5. Step 5: Solve for x
    x = 103,953,488,429.67/418,424.47
  6. Step 6: Final answer
    x = 248,440.27

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1.5x scale

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.