Home / 330,256.72-455,943.20-217,407.52

Finding the Fourth Proportional to 330,256.72, 455,943.20 and 217,407.52

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Solution

The fourth proportional to 330,256.72, 455,943.20 and 217,407.52 is: 300,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,256.72 : 455,943.20 = 217,407.52 : x
  2. Step 2: Convert to fraction form
    330,256.72/455,943.20 = 217,407.52/x
  3. Step 3: Cross multiply
    330,256.72x = 455,943.20 × 217,407.52
  4. Step 4: Simplify right side
    330,256.72x = 99,125,480,372.86
  5. Step 5: Solve for x
    x = 99,125,480,372.86/330,256.72
  6. Step 6: Final answer
    x = 300,146.75

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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.