Home / 308,917.40-463,376.10-131,430.20

Finding the Fourth Proportional to 308,917.40, 463,376.10 and 131,430.20

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Solution

The fourth proportional to 308,917.40, 463,376.10 and 131,430.20 is: 197,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,917.40 : 463,376.10 = 131,430.20 : x
  2. Step 2: Convert to fraction form
    308,917.40/463,376.10 = 131,430.20/x
  3. Step 3: Cross multiply
    308,917.40x = 463,376.10 × 131,430.20
  4. Step 4: Simplify right side
    308,917.40x = 60,901,613,498.22
  5. Step 5: Solve for x
    x = 60,901,613,498.22/308,917.40
  6. Step 6: Final answer
    x = 197,145.30

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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.