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Finding the Fourth Proportional to 501,619.80, 752,429.70 and 221,683.80

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Solution

The fourth proportional to 501,619.80, 752,429.70 and 221,683.80 is: 332,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,619.80 : 752,429.70 = 221,683.80 : x
  2. Step 2: Convert to fraction form
    501,619.80/752,429.70 = 221,683.80/x
  3. Step 3: Cross multiply
    501,619.80x = 752,429.70 × 221,683.80
  4. Step 4: Simplify right side
    501,619.80x = 166,801,475,128.86
  5. Step 5: Solve for x
    x = 166,801,475,128.86/501,619.80
  6. Step 6: Final answer
    x = 332,525.70

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1.5x scale

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.