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Finding the Fourth Proportional to 339,777.32, 509,685.42 and 103,127.72

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Solution

The fourth proportional to 339,777.32, 509,685.42 and 103,127.72 is: 154,697.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,777.32 : 509,685.42 = 103,127.72 : x
  2. Step 2: Convert to fraction form
    339,777.32/509,685.42 = 103,127.72/x
  3. Step 3: Cross multiply
    339,777.32x = 509,685.42 × 103,127.72
  4. Step 4: Simplify right side
    339,777.32x = 52,562,695,281.84
  5. Step 5: Solve for x
    x = 52,562,695,281.84/339,777.32
  6. Step 6: Final answer
    x = 154,697.48

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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.