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Finding the Fourth Proportional to 284,685.33, 392,865.84 and 155,624.37

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Solution

The fourth proportional to 284,685.33, 392,865.84 and 155,624.37 is: 214,761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,685.33 : 392,865.84 = 155,624.37 : x
  2. Step 2: Convert to fraction form
    284,685.33/392,865.84 = 155,624.37/x
  3. Step 3: Cross multiply
    284,685.33x = 392,865.84 × 155,624.37
  4. Step 4: Simplify right side
    284,685.33x = 61,139,498,844.52
  5. Step 5: Solve for x
    x = 61,139,498,844.52/284,685.33
  6. Step 6: Final answer
    x = 214,761.68

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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.