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Finding the Fourth Proportional to 713,604.80, 1,070,551.20 and 208,164.80

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Solution

The fourth proportional to 713,604.80, 1,070,551.20 and 208,164.80 is: 312,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,604.80 : 1,070,551.20 = 208,164.80 : x
  2. Step 2: Convert to fraction form
    713,604.80/1,070,551.20 = 208,164.80/x
  3. Step 3: Cross multiply
    713,604.80x = 1,070,551.20 × 208,164.80
  4. Step 4: Simplify right side
    713,604.80x = 222,851,076,437.76
  5. Step 5: Solve for x
    x = 222,851,076,437.76/713,604.80
  6. Step 6: Final answer
    x = 312,289.21

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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.