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Finding the Fourth Proportional to 608,429.60, 912,730.80 and 187,661.60

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Solution

The fourth proportional to 608,429.60, 912,730.80 and 187,661.60 is: 281,519.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,429.60 : 912,730.80 = 187,661.60 : x
  2. Step 2: Convert to fraction form
    608,429.60/912,730.80 = 187,661.60/x
  3. Step 3: Cross multiply
    608,429.60x = 912,730.80 × 187,661.60
  4. Step 4: Simplify right side
    608,429.60x = 171,284,522,297.28
  5. Step 5: Solve for x
    x = 171,284,522,297.28/608,429.60
  6. Step 6: Final answer
    x = 281,519.05

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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.