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Finding the Fourth Proportional to 452,864.20, 679,361.10 and 137,345.80

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Solution

The fourth proportional to 452,864.20, 679,361.10 and 137,345.80 is: 206,038.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,864.20 : 679,361.10 = 137,345.80 : x
  2. Step 2: Convert to fraction form
    452,864.20/679,361.10 = 137,345.80/x
  3. Step 3: Cross multiply
    452,864.20x = 679,361.10 × 137,345.80
  4. Step 4: Simplify right side
    452,864.20x = 93,307,393,768.38
  5. Step 5: Solve for x
    x = 93,307,393,768.38/452,864.20
  6. Step 6: Final answer
    x = 206,038.35

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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.