Home / 258,149.40-356,247.56-143,428.20

Finding the Fourth Proportional to 258,149.40, 356,247.56 and 143,428.20

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Solution

The fourth proportional to 258,149.40, 356,247.56 and 143,428.20 is: 197,931.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,149.40 : 356,247.56 = 143,428.20 : x
  2. Step 2: Convert to fraction form
    258,149.40/356,247.56 = 143,428.20/x
  3. Step 3: Cross multiply
    258,149.40x = 356,247.56 × 143,428.20
  4. Step 4: Simplify right side
    258,149.40x = 51,095,946,285.19
  5. Step 5: Solve for x
    x = 51,095,946,285.19/258,149.40
  6. Step 6: Final answer
    x = 197,931.69

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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.