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Finding the Fourth Proportional to 452,976.40, 679,291.80 and 137,328.40

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Solution

The fourth proportional to 452,976.40, 679,291.80 and 137,328.40 is: 205,940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,976.40 : 679,291.80 = 137,328.40 : x
  2. Step 2: Convert to fraction form
    452,976.40/679,291.80 = 137,328.40/x
  3. Step 3: Cross multiply
    452,976.40x = 679,291.80 × 137,328.40
  4. Step 4: Simplify right side
    452,976.40x = 93,286,056,027.12
  5. Step 5: Solve for x
    x = 93,286,056,027.12/452,976.40
  6. Step 6: Final answer
    x = 205,940.21

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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.