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Finding the Fourth Proportional to 282,390.88, 389,705.76 and 155,067.04

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Solution

The fourth proportional to 282,390.88, 389,705.76 and 155,067.04 is: 213,996.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,390.88 : 389,705.76 = 155,067.04 : x
  2. Step 2: Convert to fraction form
    282,390.88/389,705.76 = 155,067.04/x
  3. Step 3: Cross multiply
    282,390.88x = 389,705.76 × 155,067.04
  4. Step 4: Simplify right side
    282,390.88x = 60,430,518,674.15
  5. Step 5: Solve for x
    x = 60,430,518,674.15/282,390.88
  6. Step 6: Final answer
    x = 213,996.00

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1.5x scale

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.