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Finding the Fourth Proportional to 420,048.40, 629,908.80 and 183,229.60

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Solution

The fourth proportional to 420,048.40, 629,908.80 and 183,229.60 is: 274,772.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,048.40 : 629,908.80 = 183,229.60 : x
  2. Step 2: Convert to fraction form
    420,048.40/629,908.80 = 183,229.60/x
  3. Step 3: Cross multiply
    420,048.40x = 629,908.80 × 183,229.60
  4. Step 4: Simplify right side
    420,048.40x = 115,417,937,460.48
  5. Step 5: Solve for x
    x = 115,417,937,460.48/420,048.40
  6. Step 6: Final answer
    x = 274,772.95

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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.