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Finding the Fourth Proportional to 303,460.80, 455,565.60 and 191,140.80

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Solution

The fourth proportional to 303,460.80, 455,565.60 and 191,140.80 is: 286,947.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,460.80 : 455,565.60 = 191,140.80 : x
  2. Step 2: Convert to fraction form
    303,460.80/455,565.60 = 191,140.80/x
  3. Step 3: Cross multiply
    303,460.80x = 455,565.60 × 191,140.80
  4. Step 4: Simplify right side
    303,460.80x = 87,077,173,236.48
  5. Step 5: Solve for x
    x = 87,077,173,236.48/303,460.80
  6. Step 6: Final answer
    x = 286,947.02

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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.