Home / 313,943.40-470,915.10-126,858.60

Finding the Fourth Proportional to 313,943.40, 470,915.10 and 126,858.60

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Solution

The fourth proportional to 313,943.40, 470,915.10 and 126,858.60 is: 190,287.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,943.40 : 470,915.10 = 126,858.60 : x
  2. Step 2: Convert to fraction form
    313,943.40/470,915.10 = 126,858.60/x
  3. Step 3: Cross multiply
    313,943.40x = 470,915.10 × 126,858.60
  4. Step 4: Simplify right side
    313,943.40x = 59,739,630,304.86
  5. Step 5: Solve for x
    x = 59,739,630,304.86/313,943.40
  6. Step 6: Final answer
    x = 190,287.90

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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.