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Finding the Fourth Proportional to 293,012.20, 439,431.90 and 115,460.20

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Solution

The fourth proportional to 293,012.20, 439,431.90 and 115,460.20 is: 173,156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,012.20 : 439,431.90 = 115,460.20 : x
  2. Step 2: Convert to fraction form
    293,012.20/439,431.90 = 115,460.20/x
  3. Step 3: Cross multiply
    293,012.20x = 439,431.90 × 115,460.20
  4. Step 4: Simplify right side
    293,012.20x = 50,736,895,060.38
  5. Step 5: Solve for x
    x = 50,736,895,060.38/293,012.20
  6. Step 6: Final answer
    x = 173,156.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.