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Finding the Fourth Proportional to 339,987.20, 509,980.80 and 337,913.60

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Solution

The fourth proportional to 339,987.20, 509,980.80 and 337,913.60 is: 506,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,987.20 : 509,980.80 = 337,913.60 : x
  2. Step 2: Convert to fraction form
    339,987.20/509,980.80 = 337,913.60/x
  3. Step 3: Cross multiply
    339,987.20x = 509,980.80 × 337,913.60
  4. Step 4: Simplify right side
    339,987.20x = 172,329,448,058.88
  5. Step 5: Solve for x
    x = 172,329,448,058.88/339,987.20
  6. Step 6: Final answer
    x = 506,870.40

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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.