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Finding the Fourth Proportional to 387,208.77, 534,424.60 and 247,418.01

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Solution

The fourth proportional to 387,208.77, 534,424.60 and 247,418.01 is: 341,485.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,208.77 : 534,424.60 = 247,418.01 : x
  2. Step 2: Convert to fraction form
    387,208.77/534,424.60 = 247,418.01/x
  3. Step 3: Cross multiply
    387,208.77x = 534,424.60 × 247,418.01
  4. Step 4: Simplify right side
    387,208.77x = 132,226,271,027.05
  5. Step 5: Solve for x
    x = 132,226,271,027.05/387,208.77
  6. Step 6: Final answer
    x = 341,485.73

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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.