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Finding the Fourth Proportional to 289,648.28, 399,708.60 and 158,824.10

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Solution

The fourth proportional to 289,648.28, 399,708.60 and 158,824.10 is: 219,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,648.28 : 399,708.60 = 158,824.10 : x
  2. Step 2: Convert to fraction form
    289,648.28/399,708.60 = 158,824.10/x
  3. Step 3: Cross multiply
    289,648.28x = 399,708.60 × 158,824.10
  4. Step 4: Simplify right side
    289,648.28x = 63,483,358,657.26
  5. Step 5: Solve for x
    x = 63,483,358,657.26/289,648.28
  6. Step 6: Final answer
    x = 219,173.95

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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.