Home / 420,918.93-580,880.85-229,944.63

Finding the Fourth Proportional to 420,918.93, 580,880.85 and 229,944.63

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Solution

The fourth proportional to 420,918.93, 580,880.85 and 229,944.63 is: 317,330.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,918.93 : 580,880.85 = 229,944.63 : x
  2. Step 2: Convert to fraction form
    420,918.93/580,880.85 = 229,944.63/x
  3. Step 3: Cross multiply
    420,918.93x = 580,880.85 × 229,944.63
  4. Step 4: Simplify right side
    420,918.93x = 133,570,432,127.34
  5. Step 5: Solve for x
    x = 133,570,432,127.34/420,918.93
  6. Step 6: Final answer
    x = 317,330.54

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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.