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Finding the Fourth Proportional to 219,658.40, 329,050.20 and 126,054.80

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Solution

The fourth proportional to 219,658.40, 329,050.20 and 126,054.80 is: 188,831.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,658.40 : 329,050.20 = 126,054.80 : x
  2. Step 2: Convert to fraction form
    219,658.40/329,050.20 = 126,054.80/x
  3. Step 3: Cross multiply
    219,658.40x = 329,050.20 × 126,054.80
  4. Step 4: Simplify right side
    219,658.40x = 41,478,357,150.96
  5. Step 5: Solve for x
    x = 41,478,357,150.96/219,658.40
  6. Step 6: Final answer
    x = 188,831.19

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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.