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Finding the Fourth Proportional to 389,075.16, 536,891.58 and 219,351

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Solution

The fourth proportional to 389,075.16, 536,891.58 and 219,351 is: 302,686.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,075.16 : 536,891.58 = 219,351 : x
  2. Step 2: Convert to fraction form
    389,075.16/536,891.58 = 219,351/x
  3. Step 3: Cross multiply
    389,075.16x = 536,891.58 × 219,351
  4. Step 4: Simplify right side
    389,075.16x = 117,767,704,964.58
  5. Step 5: Solve for x
    x = 117,767,704,964.58/389,075.16
  6. Step 6: Final answer
    x = 302,686.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.