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Finding the Fourth Proportional to 359,386.80, 538,043.40 and 219,418.80

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Solution

The fourth proportional to 359,386.80, 538,043.40 and 219,418.80 is: 328,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,386.80 : 538,043.40 = 219,418.80 : x
  2. Step 2: Convert to fraction form
    359,386.80/538,043.40 = 219,418.80/x
  3. Step 3: Cross multiply
    359,386.80x = 538,043.40 × 219,418.80
  4. Step 4: Simplify right side
    359,386.80x = 118,056,837,175.92
  5. Step 5: Solve for x
    x = 118,056,837,175.92/359,386.80
  6. Step 6: Final answer
    x = 328,495.20

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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.