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Finding the Fourth Proportional to 388,701.87, 536,225.31 and 227,458.01

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Solution

The fourth proportional to 388,701.87, 536,225.31 and 227,458.01 is: 313,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,701.87 : 536,225.31 = 227,458.01 : x
  2. Step 2: Convert to fraction form
    388,701.87/536,225.31 = 227,458.01/x
  3. Step 3: Cross multiply
    388,701.87x = 536,225.31 × 227,458.01
  4. Step 4: Simplify right side
    388,701.87x = 121,968,739,243.11
  5. Step 5: Solve for x
    x = 121,968,739,243.11/388,701.87
  6. Step 6: Final answer
    x = 313,784.80

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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.