Home / 258,381.28-356,563.92-145,203.76

Finding the Fourth Proportional to 258,381.28, 356,563.92 and 145,203.76

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Solution

The fourth proportional to 258,381.28, 356,563.92 and 145,203.76 is: 200,379.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,381.28 : 356,563.92 = 145,203.76 : x
  2. Step 2: Convert to fraction form
    258,381.28/356,563.92 = 145,203.76/x
  3. Step 3: Cross multiply
    258,381.28x = 356,563.92 × 145,203.76
  4. Step 4: Simplify right side
    258,381.28x = 51,774,421,864.34
  5. Step 5: Solve for x
    x = 51,774,421,864.34/258,381.28
  6. Step 6: Final answer
    x = 200,379.93

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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.