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Finding the Fourth Proportional to 236,392.45, 326,215.12 and 128,962.45

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Solution

The fourth proportional to 236,392.45, 326,215.12 and 128,962.45 is: 177,964.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,392.45 : 326,215.12 = 128,962.45 : x
  2. Step 2: Convert to fraction form
    236,392.45/326,215.12 = 128,962.45/x
  3. Step 3: Cross multiply
    236,392.45x = 326,215.12 × 128,962.45
  4. Step 4: Simplify right side
    236,392.45x = 42,069,501,102.24
  5. Step 5: Solve for x
    x = 42,069,501,102.24/236,392.45
  6. Step 6: Final answer
    x = 177,964.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.