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Finding the Fourth Proportional to 284,081.28, 426,312 and 117,869.28

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Solution

The fourth proportional to 284,081.28, 426,312 and 117,869.28 is: 176,882.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,081.28 : 426,312 = 117,869.28 : x
  2. Step 2: Convert to fraction form
    284,081.28/426,312 = 117,869.28/x
  3. Step 3: Cross multiply
    284,081.28x = 426,312 × 117,869.28
  4. Step 4: Simplify right side
    284,081.28x = 50,249,088,495.36
  5. Step 5: Solve for x
    x = 50,249,088,495.36/284,081.28
  6. Step 6: Final answer
    x = 176,882.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.