Home / 258,197.13-356,304.90-143,472.81

Finding the Fourth Proportional to 258,197.13, 356,304.90 and 143,472.81

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Solution

The fourth proportional to 258,197.13, 356,304.90 and 143,472.81 is: 197,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,197.13 : 356,304.90 = 143,472.81 : x
  2. Step 2: Convert to fraction form
    258,197.13/356,304.90 = 143,472.81/x
  3. Step 3: Cross multiply
    258,197.13x = 356,304.90 × 143,472.81
  4. Step 4: Simplify right side
    258,197.13x = 51,120,065,219.77
  5. Step 5: Solve for x
    x = 51,120,065,219.77/258,197.13
  6. Step 6: Final answer
    x = 197,988.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.