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Finding the Fourth Proportional to 272,590.80, 408,448.80 and 256,844.40

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Solution

The fourth proportional to 272,590.80, 408,448.80 and 256,844.40 is: 384,854.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,590.80 : 408,448.80 = 256,844.40 : x
  2. Step 2: Convert to fraction form
    272,590.80/408,448.80 = 256,844.40/x
  3. Step 3: Cross multiply
    272,590.80x = 408,448.80 × 256,844.40
  4. Step 4: Simplify right side
    272,590.80x = 104,907,786,966.72
  5. Step 5: Solve for x
    x = 104,907,786,966.72/272,590.80
  6. Step 6: Final answer
    x = 384,854.47

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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.