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Finding the Fourth Proportional to 448,124.60, 618,388.62 and 278,355.32

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Solution

The fourth proportional to 448,124.60, 618,388.62 and 278,355.32 is: 384,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,124.60 : 618,388.62 = 278,355.32 : x
  2. Step 2: Convert to fraction form
    448,124.60/618,388.62 = 278,355.32/x
  3. Step 3: Cross multiply
    448,124.60x = 618,388.62 × 278,355.32
  4. Step 4: Simplify right side
    448,124.60x = 172,131,762,204.46
  5. Step 5: Solve for x
    x = 172,131,762,204.46/448,124.60
  6. Step 6: Final answer
    x = 384,115.85

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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.