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Finding the Fourth Proportional to 316,711.72, 436,807.38 and 245,284.84

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Solution

The fourth proportional to 316,711.72, 436,807.38 and 245,284.84 is: 338,295.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,711.72 : 436,807.38 = 245,284.84 : x
  2. Step 2: Convert to fraction form
    316,711.72/436,807.38 = 245,284.84/x
  3. Step 3: Cross multiply
    316,711.72x = 436,807.38 × 245,284.84
  4. Step 4: Simplify right side
    316,711.72x = 107,142,228,314.12
  5. Step 5: Solve for x
    x = 107,142,228,314.12/316,711.72
  6. Step 6: Final answer
    x = 338,295.75

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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.