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Finding the Fourth Proportional to 359,390.80, 538,049.40 and 219,422.80

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Solution

The fourth proportional to 359,390.80, 538,049.40 and 219,422.80 is: 328,501.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,390.80 : 538,049.40 = 219,422.80 : x
  2. Step 2: Convert to fraction form
    359,390.80/538,049.40 = 219,422.80/x
  3. Step 3: Cross multiply
    359,390.80x = 538,049.40 × 219,422.80
  4. Step 4: Simplify right side
    359,390.80x = 118,060,305,886.32
  5. Step 5: Solve for x
    x = 118,060,305,886.32/359,390.80
  6. Step 6: Final answer
    x = 328,501.19

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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.