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Finding the Fourth Proportional to 608,963.20, 913,358.40 and 188,281.60

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Solution

The fourth proportional to 608,963.20, 913,358.40 and 188,281.60 is: 282,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,963.20 : 913,358.40 = 188,281.60 : x
  2. Step 2: Convert to fraction form
    608,963.20/913,358.40 = 188,281.60/x
  3. Step 3: Cross multiply
    608,963.20x = 913,358.40 × 188,281.60
  4. Step 4: Simplify right side
    608,963.20x = 171,968,580,925.44
  5. Step 5: Solve for x
    x = 171,968,580,925.44/608,963.20
  6. Step 6: Final answer
    x = 282,395.69

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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.