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Finding the Fourth Proportional to 330,275.87, 455,808.81 and 187,061.39

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Solution

The fourth proportional to 330,275.87, 455,808.81 and 187,061.39 is: 258,160.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,275.87 : 455,808.81 = 187,061.39 : x
  2. Step 2: Convert to fraction form
    330,275.87/455,808.81 = 187,061.39/x
  3. Step 3: Cross multiply
    330,275.87x = 455,808.81 × 187,061.39
  4. Step 4: Simplify right side
    330,275.87x = 85,264,229,572.85
  5. Step 5: Solve for x
    x = 85,264,229,572.85/330,275.87
  6. Step 6: Final answer
    x = 258,160.64

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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.