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Finding the Fourth Proportional to 369,970.80, 554,956.20 and 133,321.20

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Solution

The fourth proportional to 369,970.80, 554,956.20 and 133,321.20 is: 199,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,970.80 : 554,956.20 = 133,321.20 : x
  2. Step 2: Convert to fraction form
    369,970.80/554,956.20 = 133,321.20/x
  3. Step 3: Cross multiply
    369,970.80x = 554,956.20 × 133,321.20
  4. Step 4: Simplify right side
    369,970.80x = 73,987,426,531.44
  5. Step 5: Solve for x
    x = 73,987,426,531.44/369,970.80
  6. Step 6: Final answer
    x = 199,981.80

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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.