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Finding the Fourth Proportional to 329,820.72, 455,154.96 and 178,918.80

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Solution

The fourth proportional to 329,820.72, 455,154.96 and 178,918.80 is: 246,909.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,820.72 : 455,154.96 = 178,918.80 : x
  2. Step 2: Convert to fraction form
    329,820.72/455,154.96 = 178,918.80/x
  3. Step 3: Cross multiply
    329,820.72x = 455,154.96 × 178,918.80
  4. Step 4: Simplify right side
    329,820.72x = 81,435,779,257.25
  5. Step 5: Solve for x
    x = 81,435,779,257.25/329,820.72
  6. Step 6: Final answer
    x = 246,909.23

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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.