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Finding the Fourth Proportional to 536,643.63, 805,334.40 and 221,100.48

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Solution

The fourth proportional to 536,643.63, 805,334.40 and 221,100.48 is: 331,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,643.63 : 805,334.40 = 221,100.48 : x
  2. Step 2: Convert to fraction form
    536,643.63/805,334.40 = 221,100.48/x
  3. Step 3: Cross multiply
    536,643.63x = 805,334.40 × 221,100.48
  4. Step 4: Simplify right side
    536,643.63x = 178,059,822,400.51
  5. Step 5: Solve for x
    x = 178,059,822,400.51/536,643.63
  6. Step 6: Final answer
    x = 331,802.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.