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Finding the Fourth Proportional to 282,290.68, 389,562.78 and 154,967.32

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Solution

The fourth proportional to 282,290.68, 389,562.78 and 154,967.32 is: 213,855.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,290.68 : 389,562.78 = 154,967.32 : x
  2. Step 2: Convert to fraction form
    282,290.68/389,562.78 = 154,967.32/x
  3. Step 3: Cross multiply
    282,290.68x = 389,562.78 × 154,967.32
  4. Step 4: Simplify right side
    282,290.68x = 60,369,499,988.35
  5. Step 5: Solve for x
    x = 60,369,499,988.35/282,290.68
  6. Step 6: Final answer
    x = 213,855.80

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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.