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Finding the Fourth Proportional to 359,479.04, 539,685.12 and 276,431.36

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Solution

The fourth proportional to 359,479.04, 539,685.12 and 276,431.36 is: 415,005.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,479.04 : 539,685.12 = 276,431.36 : x
  2. Step 2: Convert to fraction form
    359,479.04/539,685.12 = 276,431.36/x
  3. Step 3: Cross multiply
    359,479.04x = 539,685.12 × 276,431.36
  4. Step 4: Simplify right side
    359,479.04x = 149,185,891,693.36
  5. Step 5: Solve for x
    x = 149,185,891,693.36/359,479.04
  6. Step 6: Final answer
    x = 415,005.81

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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.