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Finding the Fourth Proportional to 289,875.92, 399,415.56 and 269,929.04

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Solution

The fourth proportional to 289,875.92, 399,415.56 and 269,929.04 is: 371,931.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,875.92 : 399,415.56 = 269,929.04 : x
  2. Step 2: Convert to fraction form
    289,875.92/399,415.56 = 269,929.04/x
  3. Step 3: Cross multiply
    289,875.92x = 399,415.56 × 269,929.04
  4. Step 4: Simplify right side
    289,875.92x = 107,813,858,671.86
  5. Step 5: Solve for x
    x = 107,813,858,671.86/289,875.92
  6. Step 6: Final answer
    x = 371,931.06

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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.