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Finding the Fourth Proportional to 359,948.80, 539,996.10 and 123,315.40

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Solution

The fourth proportional to 359,948.80, 539,996.10 and 123,315.40 is: 184,998.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,948.80 : 539,996.10 = 123,315.40 : x
  2. Step 2: Convert to fraction form
    359,948.80/539,996.10 = 123,315.40/x
  3. Step 3: Cross multiply
    359,948.80x = 539,996.10 × 123,315.40
  4. Step 4: Simplify right side
    359,948.80x = 66,589,835,069.94
  5. Step 5: Solve for x
    x = 66,589,835,069.94/359,948.80
  6. Step 6: Final answer
    x = 184,998.07

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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.