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Finding the Fourth Proportional to 233,212.40, 349,559.40 and 128,106.80

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Solution

The fourth proportional to 233,212.40, 349,559.40 and 128,106.80 is: 192,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    233,212.40 : 349,559.40 = 128,106.80 : x
  2. Step 2: Convert to fraction form
    233,212.40/349,559.40 = 128,106.80/x
  3. Step 3: Cross multiply
    233,212.40x = 349,559.40 × 128,106.80
  4. Step 4: Simplify right side
    233,212.40x = 44,780,936,143.92
  5. Step 5: Solve for x
    x = 44,780,936,143.92/233,212.40
  6. Step 6: Final answer
    x = 192,017.82

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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.