Home / 280,942.08-421,325.28-93,909.84

Finding the Fourth Proportional to 280,942.08, 421,325.28 and 93,909.84

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Solution

The fourth proportional to 280,942.08, 421,325.28 and 93,909.84 is: 140,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,942.08 : 421,325.28 = 93,909.84 : x
  2. Step 2: Convert to fraction form
    280,942.08/421,325.28 = 93,909.84/x
  3. Step 3: Cross multiply
    280,942.08x = 421,325.28 × 93,909.84
  4. Step 4: Simplify right side
    280,942.08x = 39,566,590,686.86
  5. Step 5: Solve for x
    x = 39,566,590,686.86/280,942.08
  6. Step 6: Final answer
    x = 140,835.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.