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Finding the Fourth Proportional to 145,648.20, 218,383.20 and 56,799.30

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Solution

The fourth proportional to 145,648.20, 218,383.20 and 56,799.30 is: 85,164.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,648.20 : 218,383.20 = 56,799.30 : x
  2. Step 2: Convert to fraction form
    145,648.20/218,383.20 = 56,799.30/x
  3. Step 3: Cross multiply
    145,648.20x = 218,383.20 × 56,799.30
  4. Step 4: Simplify right side
    145,648.20x = 12,404,012,891.76
  5. Step 5: Solve for x
    x = 12,404,012,891.76/145,648.20
  6. Step 6: Final answer
    x = 85,164.20

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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.