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Finding the Fourth Proportional to 219,955.02, 329,959.52 and 77,770.86

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Solution

The fourth proportional to 219,955.02, 329,959.52 and 77,770.86 is: 116,665.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,955.02 : 329,959.52 = 77,770.86 : x
  2. Step 2: Convert to fraction form
    219,955.02/329,959.52 = 77,770.86/x
  3. Step 3: Cross multiply
    219,955.02x = 329,959.52 × 77,770.86
  4. Step 4: Simplify right side
    219,955.02x = 25,661,235,666.50
  5. Step 5: Solve for x
    x = 25,661,235,666.50/219,955.02
  6. Step 6: Final answer
    x = 116,665.83

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1.5x scale

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.