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Finding the Fourth Proportional to 303,321.55, 455,356.73 and 191,001.55

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Solution

The fourth proportional to 303,321.55, 455,356.73 and 191,001.55 is: 286,738.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,321.55 : 455,356.73 = 191,001.55 : x
  2. Step 2: Convert to fraction form
    303,321.55/455,356.73 = 191,001.55/x
  3. Step 3: Cross multiply
    303,321.55x = 455,356.73 × 191,001.55
  4. Step 4: Simplify right side
    303,321.55x = 86,973,840,277.92
  5. Step 5: Solve for x
    x = 86,973,840,277.92/303,321.55
  6. Step 6: Final answer
    x = 286,738.08

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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.