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Finding the Fourth Proportional to 288,713.40, 432,839.70 and 122,364.60

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Solution

The fourth proportional to 288,713.40, 432,839.70 and 122,364.60 is: 183,449.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,713.40 : 432,839.70 = 122,364.60 : x
  2. Step 2: Convert to fraction form
    288,713.40/432,839.70 = 122,364.60/x
  3. Step 3: Cross multiply
    288,713.40x = 432,839.70 × 122,364.60
  4. Step 4: Simplify right side
    288,713.40x = 52,964,256,754.62
  5. Step 5: Solve for x
    x = 52,964,256,754.62/288,713.40
  6. Step 6: Final answer
    x = 183,449.25

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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.