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Finding the Fourth Proportional to 388,303.60, 535,895.13 and 227,148.43

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Solution

The fourth proportional to 388,303.60, 535,895.13 and 227,148.43 is: 313,485.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,303.60 : 535,895.13 = 227,148.43 : x
  2. Step 2: Convert to fraction form
    388,303.60/535,895.13 = 227,148.43/x
  3. Step 3: Cross multiply
    388,303.60x = 535,895.13 × 227,148.43
  4. Step 4: Simplify right side
    388,303.60x = 121,727,737,424.15
  5. Step 5: Solve for x
    x = 121,727,737,424.15/388,303.60
  6. Step 6: Final answer
    x = 313,485.99

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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.