Home / 290,890.98-401,431.95-163,565.46

Finding the Fourth Proportional to 290,890.98, 401,431.95 and 163,565.46

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Solution

The fourth proportional to 290,890.98, 401,431.95 and 163,565.46 is: 225,721.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,890.98 : 401,431.95 = 163,565.46 : x
  2. Step 2: Convert to fraction form
    290,890.98/401,431.95 = 163,565.46/x
  3. Step 3: Cross multiply
    290,890.98x = 401,431.95 × 163,565.46
  4. Step 4: Simplify right side
    290,890.98x = 65,660,401,560.45
  5. Step 5: Solve for x
    x = 65,660,401,560.45/290,890.98
  6. Step 6: Final answer
    x = 225,721.68

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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.