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Finding the Fourth Proportional to 245,313.28, 338,541.90 and 137,882.98

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Solution

The fourth proportional to 245,313.28, 338,541.90 and 137,882.98 is: 190,283.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,313.28 : 338,541.90 = 137,882.98 : x
  2. Step 2: Convert to fraction form
    245,313.28/338,541.90 = 137,882.98/x
  3. Step 3: Cross multiply
    245,313.28x = 338,541.90 × 137,882.98
  4. Step 4: Simplify right side
    245,313.28x = 46,679,166,026.86
  5. Step 5: Solve for x
    x = 46,679,166,026.86/245,313.28
  6. Step 6: Final answer
    x = 190,283.89

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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.