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Finding the Fourth Proportional to 402,212.79, 555,058.17 and 220,928.92

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Solution

The fourth proportional to 402,212.79, 555,058.17 and 220,928.92 is: 304,884.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,212.79 : 555,058.17 = 220,928.92 : x
  2. Step 2: Convert to fraction form
    402,212.79/555,058.17 = 220,928.92/x
  3. Step 3: Cross multiply
    402,212.79x = 555,058.17 × 220,928.92
  4. Step 4: Simplify right side
    402,212.79x = 122,628,400,647.63
  5. Step 5: Solve for x
    x = 122,628,400,647.63/402,212.79
  6. Step 6: Final answer
    x = 304,884.39

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1.5x scale

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.