Home / 281,311.86-388,214.04-153,984.72

Finding the Fourth Proportional to 281,311.86, 388,214.04 and 153,984.72

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Solution

The fourth proportional to 281,311.86, 388,214.04 and 153,984.72 is: 212,500.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,311.86 : 388,214.04 = 153,984.72 : x
  2. Step 2: Convert to fraction form
    281,311.86/388,214.04 = 153,984.72/x
  3. Step 3: Cross multiply
    281,311.86x = 388,214.04 × 153,984.72
  4. Step 4: Simplify right side
    281,311.86x = 59,779,030,249.47
  5. Step 5: Solve for x
    x = 59,779,030,249.47/281,311.86
  6. Step 6: Final answer
    x = 212,500.92

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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.