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Finding the Fourth Proportional to 208,366.90, 287,547.68 and 112,873.53

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Solution

The fourth proportional to 208,366.90, 287,547.68 and 112,873.53 is: 155,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,366.90 : 287,547.68 = 112,873.53 : x
  2. Step 2: Convert to fraction form
    208,366.90/287,547.68 = 112,873.53/x
  3. Step 3: Cross multiply
    208,366.90x = 287,547.68 × 112,873.53
  4. Step 4: Simplify right side
    208,366.90x = 32,456,520,401.67
  5. Step 5: Solve for x
    x = 32,456,520,401.67/208,366.90
  6. Step 6: Final answer
    x = 155,766.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.