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Finding the Fourth Proportional to 486,790.80, 730,056.60 and 149,830.80

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Solution

The fourth proportional to 486,790.80, 730,056.60 and 149,830.80 is: 224,706.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,790.80 : 730,056.60 = 149,830.80 : x
  2. Step 2: Convert to fraction form
    486,790.80/730,056.60 = 149,830.80/x
  3. Step 3: Cross multiply
    486,790.80x = 730,056.60 × 149,830.80
  4. Step 4: Simplify right side
    486,790.80x = 109,384,964,423.28
  5. Step 5: Solve for x
    x = 109,384,964,423.28/486,790.80
  6. Step 6: Final answer
    x = 224,706.31

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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.