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Finding the Fourth Proportional to 285,070.22, 427,752.88 and 206,830.24

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Solution

The fourth proportional to 285,070.22, 427,752.88 and 206,830.24 is: 310,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,070.22 : 427,752.88 = 206,830.24 : x
  2. Step 2: Convert to fraction form
    285,070.22/427,752.88 = 206,830.24/x
  3. Step 3: Cross multiply
    285,070.22x = 427,752.88 × 206,830.24
  4. Step 4: Simplify right side
    285,070.22x = 88,472,230,831.09
  5. Step 5: Solve for x
    x = 88,472,230,831.09/285,070.22
  6. Step 6: Final answer
    x = 310,352.41

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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.