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Finding the Fourth Proportional to 282,505.88, 389,860.97 and 153,446.87

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Solution

The fourth proportional to 282,505.88, 389,860.97 and 153,446.87 is: 211,758.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,505.88 : 389,860.97 = 153,446.87 : x
  2. Step 2: Convert to fraction form
    282,505.88/389,860.97 = 153,446.87/x
  3. Step 3: Cross multiply
    282,505.88x = 389,860.97 × 153,446.87
  4. Step 4: Simplify right side
    282,505.88x = 59,822,946,652.22
  5. Step 5: Solve for x
    x = 59,822,946,652.22/282,505.88
  6. Step 6: Final answer
    x = 211,758.24

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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.