Home / 458,276.10-687,138.03-205,510.92

Finding the Fourth Proportional to 458,276.10, 687,138.03 and 205,510.92

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Solution

The fourth proportional to 458,276.10, 687,138.03 and 205,510.92 is: 308,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,276.10 : 687,138.03 = 205,510.92 : x
  2. Step 2: Convert to fraction form
    458,276.10/687,138.03 = 205,510.92/x
  3. Step 3: Cross multiply
    458,276.10x = 687,138.03 × 205,510.92
  4. Step 4: Simplify right side
    458,276.10x = 141,214,368,712.29
  5. Step 5: Solve for x
    x = 141,214,368,712.29/458,276.10
  6. Step 6: Final answer
    x = 308,142.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.