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Finding the Fourth Proportional to 388,657.60, 536,349.04 and 227,481.16

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Solution

The fourth proportional to 388,657.60, 536,349.04 and 227,481.16 is: 313,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,657.60 : 536,349.04 = 227,481.16 : x
  2. Step 2: Convert to fraction form
    388,657.60/536,349.04 = 227,481.16/x
  3. Step 3: Cross multiply
    388,657.60x = 536,349.04 × 227,481.16
  4. Step 4: Simplify right side
    388,657.60x = 122,009,301,784.09
  5. Step 5: Solve for x
    x = 122,009,301,784.09/388,657.60
  6. Step 6: Final answer
    x = 313,924.91

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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.