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Finding the Fourth Proportional to 339,606.20, 509,426.73 and 86,888.86

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Solution

The fourth proportional to 339,606.20, 509,426.73 and 86,888.86 is: 130,337.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,606.20 : 509,426.73 = 86,888.86 : x
  2. Step 2: Convert to fraction form
    339,606.20/509,426.73 = 86,888.86/x
  3. Step 3: Cross multiply
    339,606.20x = 509,426.73 × 86,888.86
  4. Step 4: Simplify right side
    339,606.20x = 44,263,507,823.23
  5. Step 5: Solve for x
    x = 44,263,507,823.23/339,606.20
  6. Step 6: Final answer
    x = 130,337.75

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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.