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Finding the Fourth Proportional to 284,235.69, 392,246.51 and 156,912.33

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Solution

The fourth proportional to 284,235.69, 392,246.51 and 156,912.33 is: 216,539.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,235.69 : 392,246.51 = 156,912.33 : x
  2. Step 2: Convert to fraction form
    284,235.69/392,246.51 = 156,912.33/x
  3. Step 3: Cross multiply
    284,235.69x = 392,246.51 × 156,912.33
  4. Step 4: Simplify right side
    284,235.69x = 61,548,313,818.47
  5. Step 5: Solve for x
    x = 61,548,313,818.47/284,235.69
  6. Step 6: Final answer
    x = 216,539.71

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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.