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Finding the Fourth Proportional to 282,261.69, 389,518.79 and 154,929.69

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Solution

The fourth proportional to 282,261.69, 389,518.79 and 154,929.69 is: 213,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,261.69 : 389,518.79 = 154,929.69 : x
  2. Step 2: Convert to fraction form
    282,261.69/389,518.79 = 154,929.69/x
  3. Step 3: Cross multiply
    282,261.69x = 389,518.79 × 154,929.69
  4. Step 4: Simplify right side
    282,261.69x = 60,348,024,609.23
  5. Step 5: Solve for x
    x = 60,348,024,609.23/282,261.69
  6. Step 6: Final answer
    x = 213,801.68

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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.