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Finding the Fourth Proportional to 259,603.85, 358,253.28 and 143,317.32

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Solution

The fourth proportional to 259,603.85, 358,253.28 and 143,317.32 is: 197,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,603.85 : 358,253.28 = 143,317.32 : x
  2. Step 2: Convert to fraction form
    259,603.85/358,253.28 = 143,317.32/x
  3. Step 3: Cross multiply
    259,603.85x = 358,253.28 × 143,317.32
  4. Step 4: Simplify right side
    259,603.85x = 51,343,898,627.36
  5. Step 5: Solve for x
    x = 51,343,898,627.36/259,603.85
  6. Step 6: Final answer
    x = 197,777.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.