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Finding the Fourth Proportional to 402,802.59, 555,881.85 and 221,528.54

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Solution

The fourth proportional to 402,802.59, 555,881.85 and 221,528.54 is: 305,717.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,802.59 : 555,881.85 = 221,528.54 : x
  2. Step 2: Convert to fraction form
    402,802.59/555,881.85 = 221,528.54/x
  3. Step 3: Cross multiply
    402,802.59x = 555,881.85 × 221,528.54
  4. Step 4: Simplify right side
    402,802.59x = 123,143,691,863.59
  5. Step 5: Solve for x
    x = 123,143,691,863.59/402,802.59
  6. Step 6: Final answer
    x = 305,717.23

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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.