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Finding the Fourth Proportional to 316,895.58, 475,344.45 and 80,238.15

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Solution

The fourth proportional to 316,895.58, 475,344.45 and 80,238.15 is: 120,357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,895.58 : 475,344.45 = 80,238.15 : x
  2. Step 2: Convert to fraction form
    316,895.58/475,344.45 = 80,238.15/x
  3. Step 3: Cross multiply
    316,895.58x = 475,344.45 × 80,238.15
  4. Step 4: Simplify right side
    316,895.58x = 38,140,759,280.77
  5. Step 5: Solve for x
    x = 38,140,759,280.77/316,895.58
  6. Step 6: Final answer
    x = 120,357.50

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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.