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Finding the Fourth Proportional to 208,059.20, 312,088.80 and 194,937.20

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Solution

The fourth proportional to 208,059.20, 312,088.80 and 194,937.20 is: 292,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,059.20 : 312,088.80 = 194,937.20 : x
  2. Step 2: Convert to fraction form
    208,059.20/312,088.80 = 194,937.20/x
  3. Step 3: Cross multiply
    208,059.20x = 312,088.80 × 194,937.20
  4. Step 4: Simplify right side
    208,059.20x = 60,837,716,823.36
  5. Step 5: Solve for x
    x = 60,837,716,823.36/208,059.20
  6. Step 6: Final answer
    x = 292,405.80

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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.