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Finding the Fourth Proportional to 193,620.20, 290,430.30 and 144,468.20

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Solution

The fourth proportional to 193,620.20, 290,430.30 and 144,468.20 is: 216,702.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,620.20 : 290,430.30 = 144,468.20 : x
  2. Step 2: Convert to fraction form
    193,620.20/290,430.30 = 144,468.20/x
  3. Step 3: Cross multiply
    193,620.20x = 290,430.30 × 144,468.20
  4. Step 4: Simplify right side
    193,620.20x = 41,957,942,666.46
  5. Step 5: Solve for x
    x = 41,957,942,666.46/193,620.20
  6. Step 6: Final answer
    x = 216,702.30

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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.