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Finding the Fourth Proportional to 316,355.71, 436,570.87 and 173,115.77

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Solution

The fourth proportional to 316,355.71, 436,570.87 and 173,115.77 is: 238,899.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,355.71 : 436,570.87 = 173,115.77 : x
  2. Step 2: Convert to fraction form
    316,355.71/436,570.87 = 173,115.77/x
  3. Step 3: Cross multiply
    316,355.71x = 436,570.87 × 173,115.77
  4. Step 4: Simplify right side
    316,355.71x = 75,577,302,319.62
  5. Step 5: Solve for x
    x = 75,577,302,319.62/316,355.71
  6. Step 6: Final answer
    x = 238,899.76

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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.