Home / 309,189.60-463,438.80-131,666.40

Finding the Fourth Proportional to 309,189.60, 463,438.80 and 131,666.40

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Solution

The fourth proportional to 309,189.60, 463,438.80 and 131,666.40 is: 197,352.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,189.60 : 463,438.80 = 131,666.40 : x
  2. Step 2: Convert to fraction form
    309,189.60/463,438.80 = 131,666.40/x
  3. Step 3: Cross multiply
    309,189.60x = 463,438.80 × 131,666.40
  4. Step 4: Simplify right side
    309,189.60x = 61,019,318,416.32
  5. Step 5: Solve for x
    x = 61,019,318,416.32/309,189.60
  6. Step 6: Final answer
    x = 197,352.43

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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.