Home / 340,243.20-512,913.60-317,407.68

Finding the Fourth Proportional to 340,243.20, 512,913.60 and 317,407.68

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Solution

The fourth proportional to 340,243.20, 512,913.60 and 317,407.68 is: 478,489.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,243.20 : 512,913.60 = 317,407.68 : x
  2. Step 2: Convert to fraction form
    340,243.20/512,913.60 = 317,407.68/x
  3. Step 3: Cross multiply
    340,243.20x = 512,913.60 × 317,407.68
  4. Step 4: Simplify right side
    340,243.20x = 162,802,715,816.45
  5. Step 5: Solve for x
    x = 162,802,715,816.45/340,243.20
  6. Step 6: Final answer
    x = 478,489.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.