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Finding the Fourth Proportional to 313,340.80, 470,318.40 and 155,747.20

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Solution

The fourth proportional to 313,340.80, 470,318.40 and 155,747.20 is: 233,773.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,340.80 : 470,318.40 = 155,747.20 : x
  2. Step 2: Convert to fraction form
    313,340.80/470,318.40 = 155,747.20/x
  3. Step 3: Cross multiply
    313,340.80x = 470,318.40 × 155,747.20
  4. Step 4: Simplify right side
    313,340.80x = 73,250,773,908.48
  5. Step 5: Solve for x
    x = 73,250,773,908.48/313,340.80
  6. Step 6: Final answer
    x = 233,773.49

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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.