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Finding the Fourth Proportional to 426,803.52, 640,051.68 and 146,245.44

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Solution

The fourth proportional to 426,803.52, 640,051.68 and 146,245.44 is: 219,315.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,803.52 : 640,051.68 = 146,245.44 : x
  2. Step 2: Convert to fraction form
    426,803.52/640,051.68 = 146,245.44/x
  3. Step 3: Cross multiply
    426,803.52x = 640,051.68 × 146,245.44
  4. Step 4: Simplify right side
    426,803.52x = 93,604,639,564.34
  5. Step 5: Solve for x
    x = 93,604,639,564.34/426,803.52
  6. Step 6: Final answer
    x = 219,315.53

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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.