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Finding the Fourth Proportional to 219,951, 329,932.67 and 77,776.20

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Solution

The fourth proportional to 219,951, 329,932.67 and 77,776.20 is: 116,666.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,951 : 329,932.67 = 77,776.20 : x
  2. Step 2: Convert to fraction form
    219,951/329,932.67 = 77,776.20/x
  3. Step 3: Cross multiply
    219,951x = 329,932.67 × 77,776.20
  4. Step 4: Simplify right side
    219,951x = 25,660,908,939.57
  5. Step 5: Solve for x
    x = 25,660,908,939.57/219,951
  6. Step 6: Final answer
    x = 116,666.48

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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.