Home / 239,895.20-359,266.80-128,842.40

Finding the Fourth Proportional to 239,895.20, 359,266.80 and 128,842.40

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Solution

The fourth proportional to 239,895.20, 359,266.80 and 128,842.40 is: 192,954.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,895.20 : 359,266.80 = 128,842.40 : x
  2. Step 2: Convert to fraction form
    239,895.20/359,266.80 = 128,842.40/x
  3. Step 3: Cross multiply
    239,895.20x = 359,266.80 × 128,842.40
  4. Step 4: Simplify right side
    239,895.20x = 46,288,796,752.32
  5. Step 5: Solve for x
    x = 46,288,796,752.32/239,895.20
  6. Step 6: Final answer
    x = 192,954.24

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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.