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Finding the Fourth Proportional to 287,677.68, 397,029.15 and 173,014.80

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Solution

The fourth proportional to 287,677.68, 397,029.15 and 173,014.80 is: 238,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,677.68 : 397,029.15 = 173,014.80 : x
  2. Step 2: Convert to fraction form
    287,677.68/397,029.15 = 173,014.80/x
  3. Step 3: Cross multiply
    287,677.68x = 397,029.15 × 173,014.80
  4. Step 4: Simplify right side
    287,677.68x = 68,691,918,981.42
  5. Step 5: Solve for x
    x = 68,691,918,981.42/287,677.68
  6. Step 6: Final answer
    x = 238,780.84

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1.5x scale

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.