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Finding the Fourth Proportional to 144,820.80, 217,231.20 and 51,314.40

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Solution

The fourth proportional to 144,820.80, 217,231.20 and 51,314.40 is: 76,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,820.80 : 217,231.20 = 51,314.40 : x
  2. Step 2: Convert to fraction form
    144,820.80/217,231.20 = 51,314.40/x
  3. Step 3: Cross multiply
    144,820.80x = 217,231.20 × 51,314.40
  4. Step 4: Simplify right side
    144,820.80x = 11,147,088,689.28
  5. Step 5: Solve for x
    x = 11,147,088,689.28/144,820.80
  6. Step 6: Final answer
    x = 76,971.60

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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.