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Finding the Fourth Proportional to 339,290.60, 508,935.90 and 313,629.80

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Solution

The fourth proportional to 339,290.60, 508,935.90 and 313,629.80 is: 470,444.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,290.60 : 508,935.90 = 313,629.80 : x
  2. Step 2: Convert to fraction form
    339,290.60/508,935.90 = 313,629.80/x
  3. Step 3: Cross multiply
    339,290.60x = 508,935.90 × 313,629.80
  4. Step 4: Simplify right side
    339,290.60x = 159,617,464,529.82
  5. Step 5: Solve for x
    x = 159,617,464,529.82/339,290.60
  6. Step 6: Final answer
    x = 470,444.70

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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.