Home / 330,005.76-454,257.36-284,827.20

Finding the Fourth Proportional to 330,005.76, 454,257.36 and 284,827.20

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Solution

The fourth proportional to 330,005.76, 454,257.36 and 284,827.20 is: 392,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,005.76 : 454,257.36 = 284,827.20 : x
  2. Step 2: Convert to fraction form
    330,005.76/454,257.36 = 284,827.20/x
  3. Step 3: Cross multiply
    330,005.76x = 454,257.36 × 284,827.20
  4. Step 4: Simplify right side
    330,005.76x = 129,384,851,928.19
  5. Step 5: Solve for x
    x = 129,384,851,928.19/330,005.76
  6. Step 6: Final answer
    x = 392,068.47

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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.