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Finding the Fourth Proportional to 219,471.40, 329,207.10 and 145,599.40

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Solution

The fourth proportional to 219,471.40, 329,207.10 and 145,599.40 is: 218,399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,471.40 : 329,207.10 = 145,599.40 : x
  2. Step 2: Convert to fraction form
    219,471.40/329,207.10 = 145,599.40/x
  3. Step 3: Cross multiply
    219,471.40x = 329,207.10 × 145,599.40
  4. Step 4: Simplify right side
    219,471.40x = 47,932,356,235.74
  5. Step 5: Solve for x
    x = 47,932,356,235.74/219,471.40
  6. Step 6: Final answer
    x = 218,399.10

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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.