Home / 281,104.34-387,933.16-153,779.93

Finding the Fourth Proportional to 281,104.34, 387,933.16 and 153,779.93

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Solution

The fourth proportional to 281,104.34, 387,933.16 and 153,779.93 is: 212,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,104.34 : 387,933.16 = 153,779.93 : x
  2. Step 2: Convert to fraction form
    281,104.34/387,933.16 = 153,779.93/x
  3. Step 3: Cross multiply
    281,104.34x = 387,933.16 × 153,779.93
  4. Step 4: Simplify right side
    281,104.34x = 59,656,333,721.47
  5. Step 5: Solve for x
    x = 59,656,333,721.47/281,104.34
  6. Step 6: Final answer
    x = 212,221.32

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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.