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Finding the Fourth Proportional to 208,386.28, 312,589.02 and 60,642.28

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Solution

The fourth proportional to 208,386.28, 312,589.02 and 60,642.28 is: 90,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,386.28 : 312,589.02 = 60,642.28 : x
  2. Step 2: Convert to fraction form
    208,386.28/312,589.02 = 60,642.28/x
  3. Step 3: Cross multiply
    208,386.28x = 312,589.02 × 60,642.28
  4. Step 4: Simplify right side
    208,386.28x = 18,956,110,875.77
  5. Step 5: Solve for x
    x = 18,956,110,875.77/208,386.28
  6. Step 6: Final answer
    x = 90,966.21

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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.