Home / 379,904.90-523,660.48-257,360.00

Finding the Fourth Proportional to 379,904.90, 523,660.48 and 257,360.00

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Solution

The fourth proportional to 379,904.90, 523,660.48 and 257,360.00 is: 354,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,904.90 : 523,660.48 = 257,360.00 : x
  2. Step 2: Convert to fraction form
    379,904.90/523,660.48 = 257,360.00/x
  3. Step 3: Cross multiply
    379,904.90x = 523,660.48 × 257,360.00
  4. Step 4: Simplify right side
    379,904.90x = 134,769,257,871.10
  5. Step 5: Solve for x
    x = 134,769,257,871.10/379,904.90
  6. Step 6: Final answer
    x = 354,744.73

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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.