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Finding the Fourth Proportional to 371,873.16, 513,165.24 and 210,730.20

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Solution

The fourth proportional to 371,873.16, 513,165.24 and 210,730.20 is: 290,796.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,873.16 : 513,165.24 = 210,730.20 : x
  2. Step 2: Convert to fraction form
    371,873.16/513,165.24 = 210,730.20/x
  3. Step 3: Cross multiply
    371,873.16x = 513,165.24 × 210,730.20
  4. Step 4: Simplify right side
    371,873.16x = 108,139,413,658.25
  5. Step 5: Solve for x
    x = 108,139,413,658.25/371,873.16
  6. Step 6: Final answer
    x = 290,796.50

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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.