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Finding the Fourth Proportional to 354,647.07, 534,339.77 and 320,958.36

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Solution

The fourth proportional to 354,647.07, 534,339.77 and 320,958.36 is: 483,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,647.07 : 534,339.77 = 320,958.36 : x
  2. Step 2: Convert to fraction form
    354,647.07/534,339.77 = 320,958.36/x
  3. Step 3: Cross multiply
    354,647.07x = 534,339.77 × 320,958.36
  4. Step 4: Simplify right side
    354,647.07x = 171,500,814,657.19
  5. Step 5: Solve for x
    x = 171,500,814,657.19/354,647.07
  6. Step 6: Final answer
    x = 483,581.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.