Home / 402,790.83-555,839.59-221,502.57

Finding the Fourth Proportional to 402,790.83, 555,839.59 and 221,502.57

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Solution

The fourth proportional to 402,790.83, 555,839.59 and 221,502.57 is: 305,667.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,790.83 : 555,839.59 = 221,502.57 : x
  2. Step 2: Convert to fraction form
    402,790.83/555,839.59 = 221,502.57/x
  3. Step 3: Cross multiply
    402,790.83x = 555,839.59 × 221,502.57
  4. Step 4: Simplify right side
    402,790.83x = 123,119,897,692.75
  5. Step 5: Solve for x
    x = 123,119,897,692.75/402,790.83
  6. Step 6: Final answer
    x = 305,667.08

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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.