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Finding the Fourth Proportional to 283,229.58, 390,856.80 and 154,168.56

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Solution

The fourth proportional to 283,229.58, 390,856.80 and 154,168.56 is: 212,752.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,229.58 : 390,856.80 = 154,168.56 : x
  2. Step 2: Convert to fraction form
    283,229.58/390,856.80 = 154,168.56/x
  3. Step 3: Cross multiply
    283,229.58x = 390,856.80 × 154,168.56
  4. Step 4: Simplify right side
    283,229.58x = 60,257,830,022.21
  5. Step 5: Solve for x
    x = 60,257,830,022.21/283,229.58
  6. Step 6: Final answer
    x = 212,752.60

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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.