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Finding the Fourth Proportional to 338,429.70, 507,644.55 and 317,693.70

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Solution

The fourth proportional to 338,429.70, 507,644.55 and 317,693.70 is: 476,540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,429.70 : 507,644.55 = 317,693.70 : x
  2. Step 2: Convert to fraction form
    338,429.70/507,644.55 = 317,693.70/x
  3. Step 3: Cross multiply
    338,429.70x = 507,644.55 × 317,693.70
  4. Step 4: Simplify right side
    338,429.70x = 161,275,475,374.34
  5. Step 5: Solve for x
    x = 161,275,475,374.34/338,429.70
  6. Step 6: Final answer
    x = 476,540.55

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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.