Home / 509,314.34-763,496.64-172,119.19

Finding the Fourth Proportional to 509,314.34, 763,496.64 and 172,119.19

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Solution

The fourth proportional to 509,314.34, 763,496.64 and 172,119.19 is: 258,018.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,314.34 : 763,496.64 = 172,119.19 : x
  2. Step 2: Convert to fraction form
    509,314.34/763,496.64 = 172,119.19/x
  3. Step 3: Cross multiply
    509,314.34x = 763,496.64 × 172,119.19
  4. Step 4: Simplify right side
    509,314.34x = 131,412,423,244.52
  5. Step 5: Solve for x
    x = 131,412,423,244.52/509,314.34
  6. Step 6: Final answer
    x = 258,018.31

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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.