Home / 330,328.78-455,862.15-187,086.70

Finding the Fourth Proportional to 330,328.78, 455,862.15 and 187,086.70

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Solution

The fourth proportional to 330,328.78, 455,862.15 and 187,086.70 is: 258,184.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,328.78 : 455,862.15 = 187,086.70 : x
  2. Step 2: Convert to fraction form
    330,328.78/455,862.15 = 187,086.70/x
  3. Step 3: Cross multiply
    330,328.78x = 455,862.15 × 187,086.70
  4. Step 4: Simplify right side
    330,328.78x = 85,285,745,298.41
  5. Step 5: Solve for x
    x = 85,285,745,298.41/330,328.78
  6. Step 6: Final answer
    x = 258,184.42

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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.