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Finding the Fourth Proportional to 458,955.76, 686,959.44 and 245,189.20

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Solution

The fourth proportional to 458,955.76, 686,959.44 and 245,189.20 is: 366,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,955.76 : 686,959.44 = 245,189.20 : x
  2. Step 2: Convert to fraction form
    458,955.76/686,959.44 = 245,189.20/x
  3. Step 3: Cross multiply
    458,955.76x = 686,959.44 × 245,189.20
  4. Step 4: Simplify right side
    458,955.76x = 168,435,035,526.05
  5. Step 5: Solve for x
    x = 168,435,035,526.05/458,955.76
  6. Step 6: Final answer
    x = 366,996.23

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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.