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Finding the Fourth Proportional to 251,881.80, 378,114.30 and 152,154.60

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Solution

The fourth proportional to 251,881.80, 378,114.30 and 152,154.60 is: 228,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,881.80 : 378,114.30 = 152,154.60 : x
  2. Step 2: Convert to fraction form
    251,881.80/378,114.30 = 152,154.60/x
  3. Step 3: Cross multiply
    251,881.80x = 378,114.30 × 152,154.60
  4. Step 4: Simplify right side
    251,881.80x = 57,531,830,070.78
  5. Step 5: Solve for x
    x = 57,531,830,070.78/251,881.80
  6. Step 6: Final answer
    x = 228,408.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.