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Finding the Fourth Proportional to 371,323.56, 512,451.78 and 210,177.96

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Solution

The fourth proportional to 371,323.56, 512,451.78 and 210,177.96 is: 290,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,323.56 : 512,451.78 = 210,177.96 : x
  2. Step 2: Convert to fraction form
    371,323.56/512,451.78 = 210,177.96/x
  3. Step 3: Cross multiply
    371,323.56x = 512,451.78 × 210,177.96
  4. Step 4: Simplify right side
    371,323.56x = 107,706,069,718.77
  5. Step 5: Solve for x
    x = 107,706,069,718.77/371,323.56
  6. Step 6: Final answer
    x = 290,059.89

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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.