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Finding the Fourth Proportional to 315,211.86, 435,025.88 and 192,775.86

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Solution

The fourth proportional to 315,211.86, 435,025.88 and 192,775.86 is: 266,051.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,211.86 : 435,025.88 = 192,775.86 : x
  2. Step 2: Convert to fraction form
    315,211.86/435,025.88 = 192,775.86/x
  3. Step 3: Cross multiply
    315,211.86x = 435,025.88 × 192,775.86
  4. Step 4: Simplify right side
    315,211.86x = 83,862,488,139.26
  5. Step 5: Solve for x
    x = 83,862,488,139.26/315,211.86
  6. Step 6: Final answer
    x = 266,051.18

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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.