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Finding the Fourth Proportional to 219,889.95, 329,944.28 and 86,774.55

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Solution

The fourth proportional to 219,889.95, 329,944.28 and 86,774.55 is: 130,204.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,889.95 : 329,944.28 = 86,774.55 : x
  2. Step 2: Convert to fraction form
    219,889.95/329,944.28 = 86,774.55/x
  3. Step 3: Cross multiply
    219,889.95x = 329,944.28 × 86,774.55
  4. Step 4: Simplify right side
    219,889.95x = 28,630,765,988.20
  5. Step 5: Solve for x
    x = 28,630,765,988.20/219,889.95
  6. Step 6: Final answer
    x = 130,204.98

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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.