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Finding the Fourth Proportional to 487,074.80, 730,266.60 and 187,439.60

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Solution

The fourth proportional to 487,074.80, 730,266.60 and 187,439.60 is: 281,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,074.80 : 730,266.60 = 187,439.60 : x
  2. Step 2: Convert to fraction form
    487,074.80/730,266.60 = 187,439.60/x
  3. Step 3: Cross multiply
    487,074.80x = 730,266.60 × 187,439.60
  4. Step 4: Simplify right side
    487,074.80x = 136,880,879,397.36
  5. Step 5: Solve for x
    x = 136,880,879,397.36/487,074.80
  6. Step 6: Final answer
    x = 281,026.40

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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.