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Finding the Fourth Proportional to 514,889.89, 772,386.72 and 135,836.83

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Solution

The fourth proportional to 514,889.89, 772,386.72 and 135,836.83 is: 203,768.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,889.89 : 772,386.72 = 135,836.83 : x
  2. Step 2: Convert to fraction form
    514,889.89/772,386.72 = 135,836.83/x
  3. Step 3: Cross multiply
    514,889.89x = 772,386.72 × 135,836.83
  4. Step 4: Simplify right side
    514,889.89x = 104,918,563,578.90
  5. Step 5: Solve for x
    x = 104,918,563,578.90/514,889.89
  6. Step 6: Final answer
    x = 203,768.93

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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.