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Finding the Fourth Proportional to 313,343.20, 470,014.80 and 238,693.60

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Solution

The fourth proportional to 313,343.20, 470,014.80 and 238,693.60 is: 358,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,343.20 : 470,014.80 = 238,693.60 : x
  2. Step 2: Convert to fraction form
    313,343.20/470,014.80 = 238,693.60/x
  3. Step 3: Cross multiply
    313,343.20x = 470,014.80 × 238,693.60
  4. Step 4: Simplify right side
    313,343.20x = 112,189,524,665.28
  5. Step 5: Solve for x
    x = 112,189,524,665.28/313,343.20
  6. Step 6: Final answer
    x = 358,040.40

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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.