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Finding the Fourth Proportional to 517,887.22, 776,775.48 and 138,845.98

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Solution

The fourth proportional to 517,887.22, 776,775.48 and 138,845.98 is: 208,254.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,887.22 : 776,775.48 = 138,845.98 : x
  2. Step 2: Convert to fraction form
    517,887.22/776,775.48 = 138,845.98/x
  3. Step 3: Cross multiply
    517,887.22x = 776,775.48 × 138,845.98
  4. Step 4: Simplify right side
    517,887.22x = 107,852,152,760.57
  5. Step 5: Solve for x
    x = 107,852,152,760.57/517,887.22
  6. Step 6: Final answer
    x = 208,254.13

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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.