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Finding the Fourth Proportional to 339,333.80, 509,000.70 and 286,845.80

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Solution

The fourth proportional to 339,333.80, 509,000.70 and 286,845.80 is: 430,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,333.80 : 509,000.70 = 286,845.80 : x
  2. Step 2: Convert to fraction form
    339,333.80/509,000.70 = 286,845.80/x
  3. Step 3: Cross multiply
    339,333.80x = 509,000.70 × 286,845.80
  4. Step 4: Simplify right side
    339,333.80x = 146,004,712,992.06
  5. Step 5: Solve for x
    x = 146,004,712,992.06/339,333.80
  6. Step 6: Final answer
    x = 430,268.70

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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.