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Finding the Fourth Proportional to 508,745.17, 763,109.85 and 172,022.30

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Solution

The fourth proportional to 508,745.17, 763,109.85 and 172,022.30 is: 258,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,745.17 : 763,109.85 = 172,022.30 : x
  2. Step 2: Convert to fraction form
    508,745.17/763,109.85 = 172,022.30/x
  3. Step 3: Cross multiply
    508,745.17x = 763,109.85 × 172,022.30
  4. Step 4: Simplify right side
    508,745.17x = 131,271,908,164.16
  5. Step 5: Solve for x
    x = 131,271,908,164.16/508,745.17
  6. Step 6: Final answer
    x = 258,030.77

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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.