Home / 259,265.43-388,631.05-99,297.72

Finding the Fourth Proportional to 259,265.43, 388,631.05 and 99,297.72

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Solution

The fourth proportional to 259,265.43, 388,631.05 and 99,297.72 is: 148,844.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,265.43 : 388,631.05 = 99,297.72 : x
  2. Step 2: Convert to fraction form
    259,265.43/388,631.05 = 99,297.72/x
  3. Step 3: Cross multiply
    259,265.43x = 388,631.05 × 99,297.72
  4. Step 4: Simplify right side
    259,265.43x = 38,590,176,937.96
  5. Step 5: Solve for x
    x = 38,590,176,937.96/259,265.43
  6. Step 6: Final answer
    x = 148,844.28

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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.