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Finding the Fourth Proportional to 368,786.72, 553,617.52 and 310,350.08

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Solution

The fourth proportional to 368,786.72, 553,617.52 and 310,350.08 is: 465,893.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,786.72 : 553,617.52 = 310,350.08 : x
  2. Step 2: Convert to fraction form
    368,786.72/553,617.52 = 310,350.08/x
  3. Step 3: Cross multiply
    368,786.72x = 553,617.52 × 310,350.08
  4. Step 4: Simplify right side
    368,786.72x = 171,815,241,621.40
  5. Step 5: Solve for x
    x = 171,815,241,621.40/368,786.72
  6. Step 6: Final answer
    x = 465,893.24

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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.