Home / 283,286.34-390,920.31-155,937.06

Finding the Fourth Proportional to 283,286.34, 390,920.31 and 155,937.06

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Solution

The fourth proportional to 283,286.34, 390,920.31 and 155,937.06 is: 215,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,286.34 : 390,920.31 = 155,937.06 : x
  2. Step 2: Convert to fraction form
    283,286.34/390,920.31 = 155,937.06/x
  3. Step 3: Cross multiply
    283,286.34x = 390,920.31 × 155,937.06
  4. Step 4: Simplify right side
    283,286.34x = 60,958,963,835.69
  5. Step 5: Solve for x
    x = 60,958,963,835.69/283,286.34
  6. Step 6: Final answer
    x = 215,184.97

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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.