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Finding the Fourth Proportional to 446,990.78, 670,526.67 and 147,472.22

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Solution

The fourth proportional to 446,990.78, 670,526.67 and 147,472.22 is: 221,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,990.78 : 670,526.67 = 147,472.22 : x
  2. Step 2: Convert to fraction form
    446,990.78/670,526.67 = 147,472.22/x
  3. Step 3: Cross multiply
    446,990.78x = 670,526.67 × 147,472.22
  4. Step 4: Simplify right side
    446,990.78x = 98,884,056,594.11
  5. Step 5: Solve for x
    x = 98,884,056,594.11/446,990.78
  6. Step 6: Final answer
    x = 221,221.69

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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.