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Finding the Fourth Proportional to 329,972.40, 455,527.80 and 276,058.80

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Solution

The fourth proportional to 329,972.40, 455,527.80 and 276,058.80 is: 381,099.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,972.40 : 455,527.80 = 276,058.80 : x
  2. Step 2: Convert to fraction form
    329,972.40/455,527.80 = 276,058.80/x
  3. Step 3: Cross multiply
    329,972.40x = 455,527.80 × 276,058.80
  4. Step 4: Simplify right side
    329,972.40x = 125,752,457,834.64
  5. Step 5: Solve for x
    x = 125,752,457,834.64/329,972.40
  6. Step 6: Final answer
    x = 381,099.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.