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Finding the Fourth Proportional to 170,814.20, 256,221.30 and 72,510.20

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Solution

The fourth proportional to 170,814.20, 256,221.30 and 72,510.20 is: 108,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,814.20 : 256,221.30 = 72,510.20 : x
  2. Step 2: Convert to fraction form
    170,814.20/256,221.30 = 72,510.20/x
  3. Step 3: Cross multiply
    170,814.20x = 256,221.30 × 72,510.20
  4. Step 4: Simplify right side
    170,814.20x = 18,578,657,707.26
  5. Step 5: Solve for x
    x = 18,578,657,707.26/170,814.20
  6. Step 6: Final answer
    x = 108,765.30

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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.