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Finding the Fourth Proportional to 361,875.60, 499,875.30 and 278,040.60

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Solution

The fourth proportional to 361,875.60, 499,875.30 and 278,040.60 is: 384,070.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,875.60 : 499,875.30 = 278,040.60 : x
  2. Step 2: Convert to fraction form
    361,875.60/499,875.30 = 278,040.60/x
  3. Step 3: Cross multiply
    361,875.60x = 499,875.30 × 278,040.60
  4. Step 4: Simplify right side
    361,875.60x = 138,985,628,337.18
  5. Step 5: Solve for x
    x = 138,985,628,337.18/361,875.60
  6. Step 6: Final answer
    x = 384,070.18

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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.