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Finding the Fourth Proportional to 220,732.47, 304,918.16 and 212,539.32

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Solution

The fourth proportional to 220,732.47, 304,918.16 and 212,539.32 is: 293,600.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,732.47 : 304,918.16 = 212,539.32 : x
  2. Step 2: Convert to fraction form
    220,732.47/304,918.16 = 212,539.32/x
  3. Step 3: Cross multiply
    220,732.47x = 304,918.16 × 212,539.32
  4. Step 4: Simplify right side
    220,732.47x = 64,807,097,319.35
  5. Step 5: Solve for x
    x = 64,807,097,319.35/220,732.47
  6. Step 6: Final answer
    x = 293,600.20

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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.