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Finding the Fourth Proportional to 371,508.15, 512,683.21 and 210,394.56

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Solution

The fourth proportional to 371,508.15, 512,683.21 and 210,394.56 is: 290,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,508.15 : 512,683.21 = 210,394.56 : x
  2. Step 2: Convert to fraction form
    371,508.15/512,683.21 = 210,394.56/x
  3. Step 3: Cross multiply
    371,508.15x = 512,683.21 × 210,394.56
  4. Step 4: Simplify right side
    371,508.15x = 107,865,758,387.34
  5. Step 5: Solve for x
    x = 107,865,758,387.34/371,508.15
  6. Step 6: Final answer
    x = 290,345.60

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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.