Home / 330,397.20-455,953.80-187,153.68

Finding the Fourth Proportional to 330,397.20, 455,953.80 and 187,153.68

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Solution

The fourth proportional to 330,397.20, 455,953.80 and 187,153.68 is: 258,275.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,397.20 : 455,953.80 = 187,153.68 : x
  2. Step 2: Convert to fraction form
    330,397.20/455,953.80 = 187,153.68/x
  3. Step 3: Cross multiply
    330,397.20x = 455,953.80 × 187,153.68
  4. Step 4: Simplify right side
    330,397.20x = 85,333,431,579.98
  5. Step 5: Solve for x
    x = 85,333,431,579.98/330,397.20
  6. Step 6: Final answer
    x = 258,275.29

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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.