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Finding the Fourth Proportional to 219,146.34, 328,731.12 and 69,402.45

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Solution

The fourth proportional to 219,146.34, 328,731.12 and 69,402.45 is: 104,107.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,146.34 : 328,731.12 = 69,402.45 : x
  2. Step 2: Convert to fraction form
    219,146.34/328,731.12 = 69,402.45/x
  3. Step 3: Cross multiply
    219,146.34x = 328,731.12 × 69,402.45
  4. Step 4: Simplify right side
    219,146.34x = 22,814,745,119.24
  5. Step 5: Solve for x
    x = 22,814,745,119.24/219,146.34
  6. Step 6: Final answer
    x = 104,107.35

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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.