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Finding the Fourth Proportional to 314,816.40, 472,282.20 and 127,846.80

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Solution

The fourth proportional to 314,816.40, 472,282.20 and 127,846.80 is: 191,793.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,816.40 : 472,282.20 = 127,846.80 : x
  2. Step 2: Convert to fraction form
    314,816.40/472,282.20 = 127,846.80/x
  3. Step 3: Cross multiply
    314,816.40x = 472,282.20 × 127,846.80
  4. Step 4: Simplify right side
    314,816.40x = 60,379,767,966.96
  5. Step 5: Solve for x
    x = 60,379,767,966.96/314,816.40
  6. Step 6: Final answer
    x = 191,793.59

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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.