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Finding the Fourth Proportional to 283,194.64, 390,805.62 and 155,867.56

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Solution

The fourth proportional to 283,194.64, 390,805.62 and 155,867.56 is: 215,095.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,194.64 : 390,805.62 = 155,867.56 : x
  2. Step 2: Convert to fraction form
    283,194.64/390,805.62 = 155,867.56/x
  3. Step 3: Cross multiply
    283,194.64x = 390,805.62 × 155,867.56
  4. Step 4: Simplify right side
    283,194.64x = 60,913,918,423.69
  5. Step 5: Solve for x
    x = 60,913,918,423.69/283,194.64
  6. Step 6: Final answer
    x = 215,095.59

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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.