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Finding the Fourth Proportional to 452,963.40, 679,272.30 and 137,315.40

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Solution

The fourth proportional to 452,963.40, 679,272.30 and 137,315.40 is: 205,920.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,963.40 : 679,272.30 = 137,315.40 : x
  2. Step 2: Convert to fraction form
    452,963.40/679,272.30 = 137,315.40/x
  3. Step 3: Cross multiply
    452,963.40x = 679,272.30 × 137,315.40
  4. Step 4: Simplify right side
    452,963.40x = 93,274,547,583.42
  5. Step 5: Solve for x
    x = 93,274,547,583.42/452,963.40
  6. Step 6: Final answer
    x = 205,920.72

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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.