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Finding the Fourth Proportional to 359,208.40, 538,812.60 and 289,224.40

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Solution

The fourth proportional to 359,208.40, 538,812.60 and 289,224.40 is: 433,836.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,208.40 : 538,812.60 = 289,224.40 : x
  2. Step 2: Convert to fraction form
    359,208.40/538,812.60 = 289,224.40/x
  3. Step 3: Cross multiply
    359,208.40x = 538,812.60 × 289,224.40
  4. Step 4: Simplify right side
    359,208.40x = 155,837,750,947.44
  5. Step 5: Solve for x
    x = 155,837,750,947.44/359,208.40
  6. Step 6: Final answer
    x = 433,836.60

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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.