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Finding the Fourth Proportional to 312,016.27, 430,582.08 and 168,775.87

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Solution

The fourth proportional to 312,016.27, 430,582.08 and 168,775.87 is: 232,910.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,016.27 : 430,582.08 = 168,775.87 : x
  2. Step 2: Convert to fraction form
    312,016.27/430,582.08 = 168,775.87/x
  3. Step 3: Cross multiply
    312,016.27x = 430,582.08 × 168,775.87
  4. Step 4: Simplify right side
    312,016.27x = 72,671,865,158.41
  5. Step 5: Solve for x
    x = 72,671,865,158.41/312,016.27
  6. Step 6: Final answer
    x = 232,910.50

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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.