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Finding the Fourth Proportional to 613,221.09, 919,868.53 and 258,262.77

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Solution

The fourth proportional to 613,221.09, 919,868.53 and 258,262.77 is: 387,409.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,221.09 : 919,868.53 = 258,262.77 : x
  2. Step 2: Convert to fraction form
    613,221.09/919,868.53 = 258,262.77/x
  3. Step 3: Cross multiply
    613,221.09x = 919,868.53 × 258,262.77
  4. Step 4: Simplify right side
    613,221.09x = 237,567,794,593.63
  5. Step 5: Solve for x
    x = 237,567,794,593.63/613,221.09
  6. Step 6: Final answer
    x = 387,409.69

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1.5x scale

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.