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Finding the Fourth Proportional to 489,875.74, 676,005.51 and 272,098.53

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Solution

The fourth proportional to 489,875.74, 676,005.51 and 272,098.53 is: 375,483.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,875.74 : 676,005.51 = 272,098.53 : x
  2. Step 2: Convert to fraction form
    489,875.74/676,005.51 = 272,098.53/x
  3. Step 3: Cross multiply
    489,875.74x = 676,005.51 × 272,098.53
  4. Step 4: Simplify right side
    489,875.74x = 183,940,105,542.90
  5. Step 5: Solve for x
    x = 183,940,105,542.90/489,875.74
  6. Step 6: Final answer
    x = 375,483.19

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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.