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Finding the Fourth Proportional to 281,920.93, 388,674.51 and 223,969.94

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Solution

The fourth proportional to 281,920.93, 388,674.51 and 223,969.94 is: 308,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,920.93 : 388,674.51 = 223,969.94 : x
  2. Step 2: Convert to fraction form
    281,920.93/388,674.51 = 223,969.94/x
  3. Step 3: Cross multiply
    281,920.93x = 388,674.51 × 223,969.94
  4. Step 4: Simplify right side
    281,920.93x = 87,051,406,684.23
  5. Step 5: Solve for x
    x = 87,051,406,684.23/281,920.93
  6. Step 6: Final answer
    x = 308,779.51

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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.