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Finding the Fourth Proportional to 359,056.80, 538,876.80 and 347,392.80

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Solution

The fourth proportional to 359,056.80, 538,876.80 and 347,392.80 is: 521,371.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,056.80 : 538,876.80 = 347,392.80 : x
  2. Step 2: Convert to fraction form
    359,056.80/538,876.80 = 347,392.80/x
  3. Step 3: Cross multiply
    359,056.80x = 538,876.80 × 347,392.80
  4. Step 4: Simplify right side
    359,056.80x = 187,201,920,407.04
  5. Step 5: Solve for x
    x = 187,201,920,407.04/359,056.80
  6. Step 6: Final answer
    x = 521,371.33

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1.5x scale

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.