Home / 304,739.40-420,332.25-209,080.02

Finding the Fourth Proportional to 304,739.40, 420,332.25 and 209,080.02

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Solution

The fourth proportional to 304,739.40, 420,332.25 and 209,080.02 is: 288,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,739.40 : 420,332.25 = 209,080.02 : x
  2. Step 2: Convert to fraction form
    304,739.40/420,332.25 = 209,080.02/x
  3. Step 3: Cross multiply
    304,739.40x = 420,332.25 × 209,080.02
  4. Step 4: Simplify right side
    304,739.40x = 87,883,075,236.65
  5. Step 5: Solve for x
    x = 87,883,075,236.65/304,739.40
  6. Step 6: Final answer
    x = 288,387.64

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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.