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Finding the Fourth Proportional to 255,649.44, 383,646.96 and 89,438.88

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Solution

The fourth proportional to 255,649.44, 383,646.96 and 89,438.88 is: 134,218.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,649.44 : 383,646.96 = 89,438.88 : x
  2. Step 2: Convert to fraction form
    255,649.44/383,646.96 = 89,438.88/x
  3. Step 3: Cross multiply
    255,649.44x = 383,646.96 × 89,438.88
  4. Step 4: Simplify right side
    255,649.44x = 34,312,954,417.80
  5. Step 5: Solve for x
    x = 34,312,954,417.80/255,649.44
  6. Step 6: Final answer
    x = 134,218.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.