Home / 219,022.10-328,468.35-85,825.70

Finding the Fourth Proportional to 219,022.10, 328,468.35 and 85,825.70

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Solution

The fourth proportional to 219,022.10, 328,468.35 and 85,825.70 is: 128,713.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,022.10 : 328,468.35 = 85,825.70 : x
  2. Step 2: Convert to fraction form
    219,022.10/328,468.35 = 85,825.70/x
  3. Step 3: Cross multiply
    219,022.10x = 328,468.35 × 85,825.70
  4. Step 4: Simplify right side
    219,022.10x = 28,191,026,066.60
  5. Step 5: Solve for x
    x = 28,191,026,066.60/219,022.10
  6. Step 6: Final answer
    x = 128,713.16

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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.