Home / 282,355.06-389,650.41-155,038.78

Finding the Fourth Proportional to 282,355.06, 389,650.41 and 155,038.78

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Solution

The fourth proportional to 282,355.06, 389,650.41 and 155,038.78 is: 213,953.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,355.06 : 389,650.41 = 155,038.78 : x
  2. Step 2: Convert to fraction form
    282,355.06/389,650.41 = 155,038.78/x
  3. Step 3: Cross multiply
    282,355.06x = 389,650.41 × 155,038.78
  4. Step 4: Simplify right side
    282,355.06x = 60,410,924,192.90
  5. Step 5: Solve for x
    x = 60,410,924,192.90/282,355.06
  6. Step 6: Final answer
    x = 213,953.75

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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.