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Finding the Fourth Proportional to 402,636.00, 555,648.27 and 221,352.49

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Solution

The fourth proportional to 402,636.00, 555,648.27 and 221,352.49 is: 305,472.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,636.00 : 555,648.27 = 221,352.49 : x
  2. Step 2: Convert to fraction form
    402,636.00/555,648.27 = 221,352.49/x
  3. Step 3: Cross multiply
    402,636.00x = 555,648.27 × 221,352.49
  4. Step 4: Simplify right side
    402,636.00x = 122,994,127,993.18
  5. Step 5: Solve for x
    x = 122,994,127,993.18/402,636.00
  6. Step 6: Final answer
    x = 305,472.25

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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.