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Finding the Fourth Proportional to 253,291.84, 379,938.20 and 103,532.00

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Solution

The fourth proportional to 253,291.84, 379,938.20 and 103,532.00 is: 155,298.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,291.84 : 379,938.20 = 103,532.00 : x
  2. Step 2: Convert to fraction form
    253,291.84/379,938.20 = 103,532.00/x
  3. Step 3: Cross multiply
    253,291.84x = 379,938.20 × 103,532.00
  4. Step 4: Simplify right side
    253,291.84x = 39,335,759,305.05
  5. Step 5: Solve for x
    x = 39,335,759,305.05/253,291.84
  6. Step 6: Final answer
    x = 155,298.17

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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.