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Finding the Fourth Proportional to 219,785.04, 329,659.34 and 70,019.28

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Solution

The fourth proportional to 219,785.04, 329,659.34 and 70,019.28 is: 105,023.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,785.04 : 329,659.34 = 70,019.28 : x
  2. Step 2: Convert to fraction form
    219,785.04/329,659.34 = 70,019.28/x
  3. Step 3: Cross multiply
    219,785.04x = 329,659.34 × 70,019.28
  4. Step 4: Simplify right side
    219,785.04x = 23,082,509,281.98
  5. Step 5: Solve for x
    x = 23,082,509,281.98/219,785.04
  6. Step 6: Final answer
    x = 105,023.11

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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.