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Finding the Fourth Proportional to 634,605.40, 951,908.10 and 213,837.40

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Solution

The fourth proportional to 634,605.40, 951,908.10 and 213,837.40 is: 320,756.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,605.40 : 951,908.10 = 213,837.40 : x
  2. Step 2: Convert to fraction form
    634,605.40/951,908.10 = 213,837.40/x
  3. Step 3: Cross multiply
    634,605.40x = 951,908.10 × 213,837.40
  4. Step 4: Simplify right side
    634,605.40x = 203,553,553,142.94
  5. Step 5: Solve for x
    x = 203,553,553,142.94/634,605.40
  6. Step 6: Final answer
    x = 320,756.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.