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Finding the Fourth Proportional to 283,089.94, 390,666.85 and 155,768.27

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Solution

The fourth proportional to 283,089.94, 390,666.85 and 155,768.27 is: 214,961.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,089.94 : 390,666.85 = 155,768.27 : x
  2. Step 2: Convert to fraction form
    283,089.94/390,666.85 = 155,768.27/x
  3. Step 3: Cross multiply
    283,089.94x = 390,666.85 × 155,768.27
  4. Step 4: Simplify right side
    283,089.94x = 60,853,497,028.09
  5. Step 5: Solve for x
    x = 60,853,497,028.09/283,089.94
  6. Step 6: Final answer
    x = 214,961.71

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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.