Home / 283,069.45-390,641.79-155,745.28

Finding the Fourth Proportional to 283,069.45, 390,641.79 and 155,745.28

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Solution

The fourth proportional to 283,069.45, 390,641.79 and 155,745.28 is: 214,931.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,069.45 : 390,641.79 = 155,745.28 : x
  2. Step 2: Convert to fraction form
    283,069.45/390,641.79 = 155,745.28/x
  3. Step 3: Cross multiply
    283,069.45x = 390,641.79 × 155,745.28
  4. Step 4: Simplify right side
    283,069.45x = 60,840,614,963.25
  5. Step 5: Solve for x
    x = 60,840,614,963.25/283,069.45
  6. Step 6: Final answer
    x = 214,931.76

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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.