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Finding the Fourth Proportional to 487,506.80, 730,914.60 and 187,871.60

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Solution

The fourth proportional to 487,506.80, 730,914.60 and 187,871.60 is: 281,674.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,506.80 : 730,914.60 = 187,871.60 : x
  2. Step 2: Convert to fraction form
    487,506.80/730,914.60 = 187,871.60/x
  3. Step 3: Cross multiply
    487,506.80x = 730,914.60 × 187,871.60
  4. Step 4: Simplify right side
    487,506.80x = 137,318,095,365.36
  5. Step 5: Solve for x
    x = 137,318,095,365.36/487,506.80
  6. Step 6: Final answer
    x = 281,674.22

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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.