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Finding the Fourth Proportional to 284,313.66, 392,342.56 and 156,986.52

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Solution

The fourth proportional to 284,313.66, 392,342.56 and 156,986.52 is: 216,635.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,313.66 : 392,342.56 = 156,986.52 : x
  2. Step 2: Convert to fraction form
    284,313.66/392,342.56 = 156,986.52/x
  3. Step 3: Cross multiply
    284,313.66x = 392,342.56 × 156,986.52
  4. Step 4: Simplify right side
    284,313.66x = 61,592,493,142.29
  5. Step 5: Solve for x
    x = 61,592,493,142.29/284,313.66
  6. Step 6: Final answer
    x = 216,635.72

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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.