Home / 458,275.60-687,137.28-205,510.42

Finding the Fourth Proportional to 458,275.60, 687,137.28 and 205,510.42

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Solution

The fourth proportional to 458,275.60, 687,137.28 and 205,510.42 is: 308,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,275.60 : 687,137.28 = 205,510.42 : x
  2. Step 2: Convert to fraction form
    458,275.60/687,137.28 = 205,510.42/x
  3. Step 3: Cross multiply
    458,275.60x = 687,137.28 × 205,510.42
  4. Step 4: Simplify right side
    458,275.60x = 141,213,871,010.46
  5. Step 5: Solve for x
    x = 141,213,871,010.46/458,275.60
  6. Step 6: Final answer
    x = 308,141.81

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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.