Home / 411,975.40-618,327.60-243,284.80

Finding the Fourth Proportional to 411,975.40, 618,327.60 and 243,284.80

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Solution

The fourth proportional to 411,975.40, 618,327.60 and 243,284.80 is: 365,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,975.40 : 618,327.60 = 243,284.80 : x
  2. Step 2: Convert to fraction form
    411,975.40/618,327.60 = 243,284.80/x
  3. Step 3: Cross multiply
    411,975.40x = 618,327.60 × 243,284.80
  4. Step 4: Simplify right side
    411,975.40x = 150,429,706,500.48
  5. Step 5: Solve for x
    x = 150,429,706,500.48/411,975.40
  6. Step 6: Final answer
    x = 365,142.45

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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.