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Finding the Fourth Proportional to 510,103.37, 703,948.05 and 280,663.67

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Solution

The fourth proportional to 510,103.37, 703,948.05 and 280,663.67 is: 387,318.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,103.37 : 703,948.05 = 280,663.67 : x
  2. Step 2: Convert to fraction form
    510,103.37/703,948.05 = 280,663.67/x
  3. Step 3: Cross multiply
    510,103.37x = 703,948.05 × 280,663.67
  4. Step 4: Simplify right side
    510,103.37x = 197,572,643,202.34
  5. Step 5: Solve for x
    x = 197,572,643,202.34/510,103.37
  6. Step 6: Final answer
    x = 387,318.84

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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.