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Finding the Fourth Proportional to 371,776.56, 513,053.34 and 210,663

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Solution

The fourth proportional to 371,776.56, 513,053.34 and 210,663 is: 290,715.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,776.56 : 513,053.34 = 210,663 : x
  2. Step 2: Convert to fraction form
    371,776.56/513,053.34 = 210,663/x
  3. Step 3: Cross multiply
    371,776.56x = 513,053.34 × 210,663
  4. Step 4: Simplify right side
    371,776.56x = 108,081,355,764.42
  5. Step 5: Solve for x
    x = 108,081,355,764.42/371,776.56
  6. Step 6: Final answer
    x = 290,715.90

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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.