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Finding the Fourth Proportional to 508,675.56, 763,173.74 and 319,267.68

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Solution

The fourth proportional to 508,675.56, 763,173.74 and 319,267.68 is: 479,002.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,675.56 : 763,173.74 = 319,267.68 : x
  2. Step 2: Convert to fraction form
    508,675.56/763,173.74 = 319,267.68/x
  3. Step 3: Cross multiply
    508,675.56x = 763,173.74 × 319,267.68
  4. Step 4: Simplify right side
    508,675.56x = 243,656,709,406.72
  5. Step 5: Solve for x
    x = 243,656,709,406.72/508,675.56
  6. Step 6: Final answer
    x = 479,002.19

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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.