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Finding the Fourth Proportional to 266,378.84, 399,725.89 and 98,017.40

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Solution

The fourth proportional to 266,378.84, 399,725.89 and 98,017.40 is: 147,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,378.84 : 399,725.89 = 98,017.40 : x
  2. Step 2: Convert to fraction form
    266,378.84/399,725.89 = 98,017.40/x
  3. Step 3: Cross multiply
    266,378.84x = 399,725.89 × 98,017.40
  4. Step 4: Simplify right side
    266,378.84x = 39,180,090,451.86
  5. Step 5: Solve for x
    x = 39,180,090,451.86/266,378.84
  6. Step 6: Final answer
    x = 147,084.10

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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.