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Finding the Fourth Proportional to 405,916.80, 560,156.80 and 224,628.60

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Solution

The fourth proportional to 405,916.80, 560,156.80 and 224,628.60 is: 309,982.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,916.80 : 560,156.80 = 224,628.60 : x
  2. Step 2: Convert to fraction form
    405,916.80/560,156.80 = 224,628.60/x
  3. Step 3: Cross multiply
    405,916.80x = 560,156.80 × 224,628.60
  4. Step 4: Simplify right side
    405,916.80x = 125,827,237,764.48
  5. Step 5: Solve for x
    x = 125,827,237,764.48/405,916.80
  6. Step 6: Final answer
    x = 309,982.83

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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.