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Finding the Fourth Proportional to 405,990.64, 560,262.92 and 224,702.92

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Solution

The fourth proportional to 405,990.64, 560,262.92 and 224,702.92 is: 310,087.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,990.64 : 560,262.92 = 224,702.92 : x
  2. Step 2: Convert to fraction form
    405,990.64/560,262.92 = 224,702.92/x
  3. Step 3: Cross multiply
    405,990.64x = 560,262.92 × 224,702.92
  4. Step 4: Simplify right side
    405,990.64x = 125,892,714,091.73
  5. Step 5: Solve for x
    x = 125,892,714,091.73/405,990.64
  6. Step 6: Final answer
    x = 310,087.73

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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.