Home / 280,629.90-421,981.65-235,010.70

Finding the Fourth Proportional to 280,629.90, 421,981.65 and 235,010.70

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Solution

The fourth proportional to 280,629.90, 421,981.65 and 235,010.70 is: 353,384.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,629.90 : 421,981.65 = 235,010.70 : x
  2. Step 2: Convert to fraction form
    280,629.90/421,981.65 = 235,010.70/x
  3. Step 3: Cross multiply
    280,629.90x = 421,981.65 × 235,010.70
  4. Step 4: Simplify right side
    280,629.90x = 99,170,202,953.66
  5. Step 5: Solve for x
    x = 99,170,202,953.66/280,629.90
  6. Step 6: Final answer
    x = 353,384.31

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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.