Home / 284,308.14-392,340.09-156,981

Finding the Fourth Proportional to 284,308.14, 392,340.09 and 156,981

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Solution

The fourth proportional to 284,308.14, 392,340.09 and 156,981 is: 216,630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,308.14 : 392,340.09 = 156,981 : x
  2. Step 2: Convert to fraction form
    284,308.14/392,340.09 = 156,981/x
  3. Step 3: Cross multiply
    284,308.14x = 392,340.09 × 156,981
  4. Step 4: Simplify right side
    284,308.14x = 61,589,939,668.29
  5. Step 5: Solve for x
    x = 61,589,939,668.29/284,308.14
  6. Step 6: Final answer
    x = 216,630.94

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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.