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Finding the Fourth Proportional to 309,068.80, 463,228.80 and 131,202.40

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Solution

The fourth proportional to 309,068.80, 463,228.80 and 131,202.40 is: 196,644.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,068.80 : 463,228.80 = 131,202.40 : x
  2. Step 2: Convert to fraction form
    309,068.80/463,228.80 = 131,202.40/x
  3. Step 3: Cross multiply
    309,068.80x = 463,228.80 × 131,202.40
  4. Step 4: Simplify right side
    309,068.80x = 60,776,730,309.12
  5. Step 5: Solve for x
    x = 60,776,730,309.12/309,068.80
  6. Step 6: Final answer
    x = 196,644.66

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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.