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Finding the Fourth Proportional to 488,781.47, 674,508.26 and 268,015.67

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Solution

The fourth proportional to 488,781.47, 674,508.26 and 268,015.67 is: 369,856.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,781.47 : 674,508.26 = 268,015.67 : x
  2. Step 2: Convert to fraction form
    488,781.47/674,508.26 = 268,015.67/x
  3. Step 3: Cross multiply
    488,781.47x = 674,508.26 × 268,015.67
  4. Step 4: Simplify right side
    488,781.47x = 180,778,783,051.34
  5. Step 5: Solve for x
    x = 180,778,783,051.34/488,781.47
  6. Step 6: Final answer
    x = 369,856.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.