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Finding the Fourth Proportional to 259,316.64, 388,741.52 and 93,065.76

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Solution

The fourth proportional to 259,316.64, 388,741.52 and 93,065.76 is: 139,514.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,316.64 : 388,741.52 = 93,065.76 : x
  2. Step 2: Convert to fraction form
    259,316.64/388,741.52 = 93,065.76/x
  3. Step 3: Cross multiply
    259,316.64x = 388,741.52 × 93,065.76
  4. Step 4: Simplify right side
    259,316.64x = 36,178,525,002.36
  5. Step 5: Solve for x
    x = 36,178,525,002.36/259,316.64
  6. Step 6: Final answer
    x = 139,514.86

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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.