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Finding the Fourth Proportional to 402,799.03, 555,876.93 and 221,524.98

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Solution

The fourth proportional to 402,799.03, 555,876.93 and 221,524.98 is: 305,712.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,799.03 : 555,876.93 = 221,524.98 : x
  2. Step 2: Convert to fraction form
    402,799.03/555,876.93 = 221,524.98/x
  3. Step 3: Cross multiply
    402,799.03x = 555,876.93 × 221,524.98
  4. Step 4: Simplify right side
    402,799.03x = 123,140,623,300.81
  5. Step 5: Solve for x
    x = 123,140,623,300.81/402,799.03
  6. Step 6: Final answer
    x = 305,712.32

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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.