Home / 281,737.12-388,779.60-154,403.68

Finding the Fourth Proportional to 281,737.12, 388,779.60 and 154,403.68

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Solution

The fourth proportional to 281,737.12, 388,779.60 and 154,403.68 is: 213,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,737.12 : 388,779.60 = 154,403.68 : x
  2. Step 2: Convert to fraction form
    281,737.12/388,779.60 = 154,403.68/x
  3. Step 3: Cross multiply
    281,737.12x = 388,779.60 × 154,403.68
  4. Step 4: Simplify right side
    281,737.12x = 60,029,000,948.93
  5. Step 5: Solve for x
    x = 60,029,000,948.93/281,737.12
  6. Step 6: Final answer
    x = 213,067.42

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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.