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Finding the Fourth Proportional to 398,891.22, 595,225.67 and 355,901.11

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Solution

The fourth proportional to 398,891.22, 595,225.67 and 355,901.11 is: 531,075.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,891.22 : 595,225.67 = 355,901.11 : x
  2. Step 2: Convert to fraction form
    398,891.22/595,225.67 = 355,901.11/x
  3. Step 3: Cross multiply
    398,891.22x = 595,225.67 × 355,901.11
  4. Step 4: Simplify right side
    398,891.22x = 211,841,473,385.92
  5. Step 5: Solve for x
    x = 211,841,473,385.92/398,891.22
  6. Step 6: Final answer
    x = 531,075.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.