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Finding the Fourth Proportional to 201,639.70, 302,459.55 and 131,598.10

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Solution

The fourth proportional to 201,639.70, 302,459.55 and 131,598.10 is: 197,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,639.70 : 302,459.55 = 131,598.10 : x
  2. Step 2: Convert to fraction form
    201,639.70/302,459.55 = 131,598.10/x
  3. Step 3: Cross multiply
    201,639.70x = 302,459.55 × 131,598.10
  4. Step 4: Simplify right side
    201,639.70x = 39,803,102,106.86
  5. Step 5: Solve for x
    x = 39,803,102,106.86/201,639.70
  6. Step 6: Final answer
    x = 197,397.15

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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.