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Finding the Fourth Proportional to 452,637.66, 679,103.91 and 215,949.72

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Solution

The fourth proportional to 452,637.66, 679,103.91 and 215,949.72 is: 323,994.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,637.66 : 679,103.91 = 215,949.72 : x
  2. Step 2: Convert to fraction form
    452,637.66/679,103.91 = 215,949.72/x
  3. Step 3: Cross multiply
    452,637.66x = 679,103.91 × 215,949.72
  4. Step 4: Simplify right side
    452,637.66x = 146,652,299,215.41
  5. Step 5: Solve for x
    x = 146,652,299,215.41/452,637.66
  6. Step 6: Final answer
    x = 323,994.91

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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.