Home / 219,890.88-329,631.12-86,772.24

Finding the Fourth Proportional to 219,890.88, 329,631.12 and 86,772.24

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Solution

The fourth proportional to 219,890.88, 329,631.12 and 86,772.24 is: 130,077.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,890.88 : 329,631.12 = 86,772.24 : x
  2. Step 2: Convert to fraction form
    219,890.88/329,631.12 = 86,772.24/x
  3. Step 3: Cross multiply
    219,890.88x = 329,631.12 × 86,772.24
  4. Step 4: Simplify right side
    219,890.88x = 28,602,830,656.11
  5. Step 5: Solve for x
    x = 28,602,830,656.11/219,890.88
  6. Step 6: Final answer
    x = 130,077.39

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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.