Home / 213,586,235.82-320,391,686.45-82,429,191.90

Finding the Fourth Proportional to 213,586,235.82, 320,391,686.45 and 82,429,191.90

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Solution

The fourth proportional to 213,586,235.82, 320,391,686.45 and 82,429,191.90 is: 123,648,547.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,586,235.82 : 320,391,686.45 = 82,429,191.90 : x
  2. Step 2: Convert to fraction form
    213,586,235.82/320,391,686.45 = 82,429,191.90/x
  3. Step 3: Cross multiply
    213,586,235.82x = 320,391,686.45 × 82,429,191.90
  4. Step 4: Simplify right side
    213,586,235.82x = 26,409,627,805,551,680
  5. Step 5: Solve for x
    x = 26,409,627,805,551,680/213,586,235.82
  6. Step 6: Final answer
    x = 123,648,547.41

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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.