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Finding the Fourth Proportional to 230,070.57, 317,494.85 and 128,093.79

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Solution

The fourth proportional to 230,070.57, 317,494.85 and 128,093.79 is: 176,768.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,070.57 : 317,494.85 = 128,093.79 : x
  2. Step 2: Convert to fraction form
    230,070.57/317,494.85 = 128,093.79/x
  3. Step 3: Cross multiply
    230,070.57x = 317,494.85 × 128,093.79
  4. Step 4: Simplify right side
    230,070.57x = 40,669,118,641.98
  5. Step 5: Solve for x
    x = 40,669,118,641.98/230,070.57
  6. Step 6: Final answer
    x = 176,768.02

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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.