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Finding the Fourth Proportional to 508,438.52, 701,631.80 and 278,995.10

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Solution

The fourth proportional to 508,438.52, 701,631.80 and 278,995.10 is: 385,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,438.52 : 701,631.80 = 278,995.10 : x
  2. Step 2: Convert to fraction form
    508,438.52/701,631.80 = 278,995.10/x
  3. Step 3: Cross multiply
    508,438.52x = 701,631.80 × 278,995.10
  4. Step 4: Simplify right side
    508,438.52x = 195,751,834,204.18
  5. Step 5: Solve for x
    x = 195,751,834,204.18/508,438.52
  6. Step 6: Final answer
    x = 385,005.91

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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.