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Finding the Fourth Proportional to 217,539, 326,308.50 and 77,303.16

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Solution

The fourth proportional to 217,539, 326,308.50 and 77,303.16 is: 115,954.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,539 : 326,308.50 = 77,303.16 : x
  2. Step 2: Convert to fraction form
    217,539/326,308.50 = 77,303.16/x
  3. Step 3: Cross multiply
    217,539x = 326,308.50 × 77,303.16
  4. Step 4: Simplify right side
    217,539x = 25,224,678,184.86
  5. Step 5: Solve for x
    x = 25,224,678,184.86/217,539
  6. Step 6: Final answer
    x = 115,954.74

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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.