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Finding the Fourth Proportional to 423,085.48, 634,628.46 and 210,000.61

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Solution

The fourth proportional to 423,085.48, 634,628.46 and 210,000.61 is: 315,001.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,085.48 : 634,628.46 = 210,000.61 : x
  2. Step 2: Convert to fraction form
    423,085.48/634,628.46 = 210,000.61/x
  3. Step 3: Cross multiply
    423,085.48x = 634,628.46 × 210,000.61
  4. Step 4: Simplify right side
    423,085.48x = 133,272,363,723.36
  5. Step 5: Solve for x
    x = 133,272,363,723.36/423,085.48
  6. Step 6: Final answer
    x = 315,001.03

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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.