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Finding the Fourth Proportional to 388,067.04, 535,606.08 and 242,940

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Solution

The fourth proportional to 388,067.04, 535,606.08 and 242,940 is: 335,303.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,067.04 : 535,606.08 = 242,940 : x
  2. Step 2: Convert to fraction form
    388,067.04/535,606.08 = 242,940/x
  3. Step 3: Cross multiply
    388,067.04x = 535,606.08 × 242,940
  4. Step 4: Simplify right side
    388,067.04x = 130,120,141,075.20
  5. Step 5: Solve for x
    x = 130,120,141,075.20/388,067.04
  6. Step 6: Final answer
    x = 335,303.25

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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.