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Finding the Fourth Proportional to 303,417.20, 455,471.40 and 178,828.40

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Solution

The fourth proportional to 303,417.20, 455,471.40 and 178,828.40 is: 268,446.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,417.20 : 455,471.40 = 178,828.40 : x
  2. Step 2: Convert to fraction form
    303,417.20/455,471.40 = 178,828.40/x
  3. Step 3: Cross multiply
    303,417.20x = 455,471.40 × 178,828.40
  4. Step 4: Simplify right side
    303,417.20x = 81,451,221,707.76
  5. Step 5: Solve for x
    x = 81,451,221,707.76/303,417.20
  6. Step 6: Final answer
    x = 268,446.29

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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.