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Finding the Fourth Proportional to 405,967.80, 560,221.71 and 224,687.40

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Solution

The fourth proportional to 405,967.80, 560,221.71 and 224,687.40 is: 310,060.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,967.80 : 560,221.71 = 224,687.40 : x
  2. Step 2: Convert to fraction form
    405,967.80/560,221.71 = 224,687.40/x
  3. Step 3: Cross multiply
    405,967.80x = 560,221.71 × 224,687.40
  4. Step 4: Simplify right side
    405,967.80x = 125,874,759,443.45
  5. Step 5: Solve for x
    x = 125,874,759,443.45/405,967.80
  6. Step 6: Final answer
    x = 310,060.94

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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.