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Finding the Fourth Proportional to 388,895, 536,675.46 and 210,047

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Solution

The fourth proportional to 388,895, 536,675.46 and 210,047 is: 289,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,895 : 536,675.46 = 210,047 : x
  2. Step 2: Convert to fraction form
    388,895/536,675.46 = 210,047/x
  3. Step 3: Cross multiply
    388,895x = 536,675.46 × 210,047
  4. Step 4: Simplify right side
    388,895x = 112,727,070,346.62
  5. Step 5: Solve for x
    x = 112,727,070,346.62/388,895
  6. Step 6: Final answer
    x = 289,865.05

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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.