Home / 389,386.90-584,141.10-123,122.08

Finding the Fourth Proportional to 389,386.90, 584,141.10 and 123,122.08

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Solution

The fourth proportional to 389,386.90, 584,141.10 and 123,122.08 is: 184,702.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,386.90 : 584,141.10 = 123,122.08 : x
  2. Step 2: Convert to fraction form
    389,386.90/584,141.10 = 123,122.08/x
  3. Step 3: Cross multiply
    389,386.90x = 584,141.10 × 123,122.08
  4. Step 4: Simplify right side
    389,386.90x = 71,920,667,245.49
  5. Step 5: Solve for x
    x = 71,920,667,245.49/389,386.90
  6. Step 6: Final answer
    x = 184,702.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.