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Finding the Fourth Proportional to 359,576, 539,450.40 and 137,960

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Solution

The fourth proportional to 359,576, 539,450.40 and 137,960 is: 206,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,576 : 539,450.40 = 137,960 : x
  2. Step 2: Convert to fraction form
    359,576/539,450.40 = 137,960/x
  3. Step 3: Cross multiply
    359,576x = 539,450.40 × 137,960
  4. Step 4: Simplify right side
    359,576x = 74,422,577,184
  5. Step 5: Solve for x
    x = 74,422,577,184/359,576
  6. Step 6: Final answer
    x = 206,973.15

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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.