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Finding the Fourth Proportional to 201,639.10, 302,113.05 and 131,482.30

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Solution

The fourth proportional to 201,639.10, 302,113.05 and 131,482.30 is: 196,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,639.10 : 302,113.05 = 131,482.30 : x
  2. Step 2: Convert to fraction form
    201,639.10/302,113.05 = 131,482.30/x
  3. Step 3: Cross multiply
    201,639.10x = 302,113.05 × 131,482.30
  4. Step 4: Simplify right side
    201,639.10x = 39,722,518,674.02
  5. Step 5: Solve for x
    x = 39,722,518,674.02/201,639.10
  6. Step 6: Final answer
    x = 196,998.10

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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.