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Finding the Fourth Proportional to 359,426.40, 538,880.40 and 201,703.20

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Solution

The fourth proportional to 359,426.40, 538,880.40 and 201,703.20 is: 302,409.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,426.40 : 538,880.40 = 201,703.20 : x
  2. Step 2: Convert to fraction form
    359,426.40/538,880.40 = 201,703.20/x
  3. Step 3: Cross multiply
    359,426.40x = 538,880.40 × 201,703.20
  4. Step 4: Simplify right side
    359,426.40x = 108,693,901,097.28
  5. Step 5: Solve for x
    x = 108,693,901,097.28/359,426.40
  6. Step 6: Final answer
    x = 302,409.34

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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.