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Finding the Fourth Proportional to 918,171, 1,377,335.88 and 253,323

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Solution

The fourth proportional to 918,171, 1,377,335.88 and 253,323 is: 380,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,171 : 1,377,335.88 = 253,323 : x
  2. Step 2: Convert to fraction form
    918,171/1,377,335.88 = 253,323/x
  3. Step 3: Cross multiply
    918,171x = 1,377,335.88 × 253,323
  4. Step 4: Simplify right side
    918,171x = 348,910,857,129.24
  5. Step 5: Solve for x
    x = 348,910,857,129.24/918,171
  6. Step 6: Final answer
    x = 380,006.40

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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.