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Finding the Fourth Proportional to 219,655.80, 329,483.70 and 203,909.40

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Solution

The fourth proportional to 219,655.80, 329,483.70 and 203,909.40 is: 305,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,655.80 : 329,483.70 = 203,909.40 : x
  2. Step 2: Convert to fraction form
    219,655.80/329,483.70 = 203,909.40/x
  3. Step 3: Cross multiply
    219,655.80x = 329,483.70 × 203,909.40
  4. Step 4: Simplify right side
    219,655.80x = 67,184,823,576.78
  5. Step 5: Solve for x
    x = 67,184,823,576.78/219,655.80
  6. Step 6: Final answer
    x = 305,864.10

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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.