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Finding the Fourth Proportional to 509,322.33, 763,508.66 and 172,127.21

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Solution

The fourth proportional to 509,322.33, 763,508.66 and 172,127.21 is: 258,030.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,322.33 : 763,508.66 = 172,127.21 : x
  2. Step 2: Convert to fraction form
    509,322.33/763,508.66 = 172,127.21/x
  3. Step 3: Cross multiply
    509,322.33x = 763,508.66 × 172,127.21
  4. Step 4: Simplify right side
    509,322.33x = 131,420,610,778.46
  5. Step 5: Solve for x
    x = 131,420,610,778.46/509,322.33
  6. Step 6: Final answer
    x = 258,030.33

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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.