Home / 258,378.12-356,560.38-145,200.87

Finding the Fourth Proportional to 258,378.12, 356,560.38 and 145,200.87

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Solution

The fourth proportional to 258,378.12, 356,560.38 and 145,200.87 is: 200,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,378.12 : 356,560.38 = 145,200.87 : x
  2. Step 2: Convert to fraction form
    258,378.12/356,560.38 = 145,200.87/x
  3. Step 3: Cross multiply
    258,378.12x = 356,560.38 × 145,200.87
  4. Step 4: Simplify right side
    258,378.12x = 51,772,877,383.53
  5. Step 5: Solve for x
    x = 51,772,877,383.53/258,378.12
  6. Step 6: Final answer
    x = 200,376.40

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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.