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Finding the Fourth Proportional to 259,644.40, 389,612.40 and 109,859.20

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Solution

The fourth proportional to 259,644.40, 389,612.40 and 109,859.20 is: 164,850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,644.40 : 389,612.40 = 109,859.20 : x
  2. Step 2: Convert to fraction form
    259,644.40/389,612.40 = 109,859.20/x
  3. Step 3: Cross multiply
    259,644.40x = 389,612.40 × 109,859.20
  4. Step 4: Simplify right side
    259,644.40x = 42,802,506,574.08
  5. Step 5: Solve for x
    x = 42,802,506,574.08/259,644.40
  6. Step 6: Final answer
    x = 164,850.49

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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.