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Finding the Fourth Proportional to 388,803.65, 536,560.40 and 227,643.62

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Solution

The fourth proportional to 388,803.65, 536,560.40 and 227,643.62 is: 314,154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,803.65 : 536,560.40 = 227,643.62 : x
  2. Step 2: Convert to fraction form
    388,803.65/536,560.40 = 227,643.62/x
  3. Step 3: Cross multiply
    388,803.65x = 536,560.40 × 227,643.62
  4. Step 4: Simplify right side
    388,803.65x = 122,144,549,690.96
  5. Step 5: Solve for x
    x = 122,144,549,690.96/388,803.65
  6. Step 6: Final answer
    x = 314,154.85

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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.