Home / 219,970.12-329,207.18-135,783.40

Finding the Fourth Proportional to 219,970.12, 329,207.18 and 135,783.40

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Solution

The fourth proportional to 219,970.12, 329,207.18 and 135,783.40 is: 203,213.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,970.12 : 329,207.18 = 135,783.40 : x
  2. Step 2: Convert to fraction form
    219,970.12/329,207.18 = 135,783.40/x
  3. Step 3: Cross multiply
    219,970.12x = 329,207.18 × 135,783.40
  4. Step 4: Simplify right side
    219,970.12x = 44,700,870,204.81
  5. Step 5: Solve for x
    x = 44,700,870,204.81/219,970.12
  6. Step 6: Final answer
    x = 203,213.37

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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.