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Finding the Fourth Proportional to 339,568.60, 509,352.90 and 310,538.20

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Solution

The fourth proportional to 339,568.60, 509,352.90 and 310,538.20 is: 465,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,568.60 : 509,352.90 = 310,538.20 : x
  2. Step 2: Convert to fraction form
    339,568.60/509,352.90 = 310,538.20/x
  3. Step 3: Cross multiply
    339,568.60x = 509,352.90 × 310,538.20
  4. Step 4: Simplify right side
    339,568.60x = 158,173,532,730.78
  5. Step 5: Solve for x
    x = 158,173,532,730.78/339,568.60
  6. Step 6: Final answer
    x = 465,807.30

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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.