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Finding the Fourth Proportional to 284,841.70, 393,065.65 and 155,754.56

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Solution

The fourth proportional to 284,841.70, 393,065.65 and 155,754.56 is: 214,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,841.70 : 393,065.65 = 155,754.56 : x
  2. Step 2: Convert to fraction form
    284,841.70/393,065.65 = 155,754.56/x
  3. Step 3: Cross multiply
    284,841.70x = 393,065.65 × 155,754.56
  4. Step 4: Simplify right side
    284,841.70x = 61,221,767,366.86
  5. Step 5: Solve for x
    x = 61,221,767,366.86/284,841.70
  6. Step 6: Final answer
    x = 214,932.60

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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.