Home / 315,331.60-472,997.40-309,110.80

Finding the Fourth Proportional to 315,331.60, 472,997.40 and 309,110.80

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Solution

The fourth proportional to 315,331.60, 472,997.40 and 309,110.80 is: 463,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,331.60 : 472,997.40 = 309,110.80 : x
  2. Step 2: Convert to fraction form
    315,331.60/472,997.40 = 309,110.80/x
  3. Step 3: Cross multiply
    315,331.60x = 472,997.40 × 309,110.80
  4. Step 4: Simplify right side
    315,331.60x = 146,208,604,711.92
  5. Step 5: Solve for x
    x = 146,208,604,711.92/315,331.60
  6. Step 6: Final answer
    x = 463,666.20

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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.