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Finding the Fourth Proportional to 540,136.40, 810,204.60 and 339,807.20

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Solution

The fourth proportional to 540,136.40, 810,204.60 and 339,807.20 is: 509,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,136.40 : 810,204.60 = 339,807.20 : x
  2. Step 2: Convert to fraction form
    540,136.40/810,204.60 = 339,807.20/x
  3. Step 3: Cross multiply
    540,136.40x = 810,204.60 × 339,807.20
  4. Step 4: Simplify right side
    540,136.40x = 275,313,356,553.12
  5. Step 5: Solve for x
    x = 275,313,356,553.12/540,136.40
  6. Step 6: Final answer
    x = 509,710.80

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Similar ratio
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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.