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Finding the Fourth Proportional to 339,390.40, 509,085.60 and 331,614.40

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Solution

The fourth proportional to 339,390.40, 509,085.60 and 331,614.40 is: 497,421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,390.40 : 509,085.60 = 331,614.40 : x
  2. Step 2: Convert to fraction form
    339,390.40/509,085.60 = 331,614.40/x
  3. Step 3: Cross multiply
    339,390.40x = 509,085.60 × 331,614.40
  4. Step 4: Simplify right side
    339,390.40x = 168,820,115,792.64
  5. Step 5: Solve for x
    x = 168,820,115,792.64/339,390.40
  6. Step 6: Final answer
    x = 497,421.60

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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.