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Finding the Fourth Proportional to 397,130.20, 595,800.90 and 172,394.20

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Solution

The fourth proportional to 397,130.20, 595,800.90 and 172,394.20 is: 258,637.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,130.20 : 595,800.90 = 172,394.20 : x
  2. Step 2: Convert to fraction form
    397,130.20/595,800.90 = 172,394.20/x
  3. Step 3: Cross multiply
    397,130.20x = 595,800.90 × 172,394.20
  4. Step 4: Simplify right side
    397,130.20x = 102,712,619,514.78
  5. Step 5: Solve for x
    x = 102,712,619,514.78/397,130.20
  6. Step 6: Final answer
    x = 258,637.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.