Home / 280,868.45-421,602.53-121,023.27

Finding the Fourth Proportional to 280,868.45, 421,602.53 and 121,023.27

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Solution

The fourth proportional to 280,868.45, 421,602.53 and 121,023.27 is: 181,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,868.45 : 421,602.53 = 121,023.27 : x
  2. Step 2: Convert to fraction form
    280,868.45/421,602.53 = 121,023.27/x
  3. Step 3: Cross multiply
    280,868.45x = 421,602.53 × 121,023.27
  4. Step 4: Simplify right side
    280,868.45x = 51,023,715,909.89
  5. Step 5: Solve for x
    x = 51,023,715,909.89/280,868.45
  6. Step 6: Final answer
    x = 181,664.11

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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.