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Finding the Fourth Proportional to 288,415.80, 432,623.70 and 122,182.20

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Solution

The fourth proportional to 288,415.80, 432,623.70 and 122,182.20 is: 183,273.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,415.80 : 432,623.70 = 122,182.20 : x
  2. Step 2: Convert to fraction form
    288,415.80/432,623.70 = 122,182.20/x
  3. Step 3: Cross multiply
    288,415.80x = 432,623.70 × 122,182.20
  4. Step 4: Simplify right side
    288,415.80x = 52,858,915,438.14
  5. Step 5: Solve for x
    x = 52,858,915,438.14/288,415.80
  6. Step 6: Final answer
    x = 183,273.30

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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.