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Finding the Fourth Proportional to 358,900.80, 495,521.64 and 223,137.60

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Solution

The fourth proportional to 358,900.80, 495,521.64 and 223,137.60 is: 308,078.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,900.80 : 495,521.64 = 223,137.60 : x
  2. Step 2: Convert to fraction form
    358,900.80/495,521.64 = 223,137.60/x
  3. Step 3: Cross multiply
    358,900.80x = 495,521.64 × 223,137.60
  4. Step 4: Simplify right side
    358,900.80x = 110,569,509,497.66
  5. Step 5: Solve for x
    x = 110,569,509,497.66/358,900.80
  6. Step 6: Final answer
    x = 308,078.19

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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.