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Finding the Fourth Proportional to 274,199.80, 378,403.50 and 153,345.64

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Solution

The fourth proportional to 274,199.80, 378,403.50 and 153,345.64 is: 211,621.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,199.80 : 378,403.50 = 153,345.64 : x
  2. Step 2: Convert to fraction form
    274,199.80/378,403.50 = 153,345.64/x
  3. Step 3: Cross multiply
    274,199.80x = 378,403.50 × 153,345.64
  4. Step 4: Simplify right side
    274,199.80x = 58,026,526,885.74
  5. Step 5: Solve for x
    x = 58,026,526,885.74/274,199.80
  6. Step 6: Final answer
    x = 211,621.33

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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.