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Finding the Fourth Proportional to 387,393.05, 534,503.12 and 226,155.44

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Solution

The fourth proportional to 387,393.05, 534,503.12 and 226,155.44 is: 312,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,393.05 : 534,503.12 = 226,155.44 : x
  2. Step 2: Convert to fraction form
    387,393.05/534,503.12 = 226,155.44/x
  3. Step 3: Cross multiply
    387,393.05x = 534,503.12 × 226,155.44
  4. Step 4: Simplify right side
    387,393.05x = 120,880,788,490.45
  5. Step 5: Solve for x
    x = 120,880,788,490.45/387,393.05
  6. Step 6: Final answer
    x = 312,036.54

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1.5x scale

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.