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Finding the Fourth Proportional to 287,305.35, 430,813.83 and 167,401.05

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Solution

The fourth proportional to 287,305.35, 430,813.83 and 167,401.05 is: 251,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,305.35 : 430,813.83 = 167,401.05 : x
  2. Step 2: Convert to fraction form
    287,305.35/430,813.83 = 167,401.05/x
  3. Step 3: Cross multiply
    287,305.35x = 430,813.83 × 167,401.05
  4. Step 4: Simplify right side
    287,305.35x = 72,118,687,496.52
  5. Step 5: Solve for x
    x = 72,118,687,496.52/287,305.35
  6. Step 6: Final answer
    x = 251,017.56

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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.