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Finding the Fourth Proportional to 259,366.29, 389,224.27 and 90,888.13

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Solution

The fourth proportional to 259,366.29, 389,224.27 and 90,888.13 is: 136,393.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,366.29 : 389,224.27 = 90,888.13 : x
  2. Step 2: Convert to fraction form
    259,366.29/389,224.27 = 90,888.13/x
  3. Step 3: Cross multiply
    259,366.29x = 389,224.27 × 90,888.13
  4. Step 4: Simplify right side
    259,366.29x = 35,375,864,461.67
  5. Step 5: Solve for x
    x = 35,375,864,461.67/259,366.29
  6. Step 6: Final answer
    x = 136,393.46

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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.