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Finding the Fourth Proportional to 358,800.80, 495,107.88 and 220,957.80

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Solution

The fourth proportional to 358,800.80, 495,107.88 and 220,957.80 is: 304,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,800.80 : 495,107.88 = 220,957.80 : x
  2. Step 2: Convert to fraction form
    358,800.80/495,107.88 = 220,957.80/x
  3. Step 3: Cross multiply
    358,800.80x = 495,107.88 × 220,957.80
  4. Step 4: Simplify right side
    358,800.80x = 109,397,947,927.46
  5. Step 5: Solve for x
    x = 109,397,947,927.46/358,800.80
  6. Step 6: Final answer
    x = 304,898.84

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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.