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Finding the Fourth Proportional to 371,998.73, 513,398.35 and 210,836.47

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Solution

The fourth proportional to 371,998.73, 513,398.35 and 210,836.47 is: 290,977.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,998.73 : 513,398.35 = 210,836.47 : x
  2. Step 2: Convert to fraction form
    371,998.73/513,398.35 = 210,836.47/x
  3. Step 3: Cross multiply
    371,998.73x = 513,398.35 × 210,836.47
  4. Step 4: Simplify right side
    371,998.73x = 108,243,095,760.50
  5. Step 5: Solve for x
    x = 108,243,095,760.50/371,998.73
  6. Step 6: Final answer
    x = 290,977.06

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1.5x scale

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.