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Finding the Fourth Proportional to 536,918.80, 805,992.60 and 315,427.60

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Solution

The fourth proportional to 536,918.80, 805,992.60 and 315,427.60 is: 473,502.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,918.80 : 805,992.60 = 315,427.60 : x
  2. Step 2: Convert to fraction form
    536,918.80/805,992.60 = 315,427.60/x
  3. Step 3: Cross multiply
    536,918.80x = 805,992.60 × 315,427.60
  4. Step 4: Simplify right side
    536,918.80x = 254,232,311,435.76
  5. Step 5: Solve for x
    x = 254,232,311,435.76/536,918.80
  6. Step 6: Final answer
    x = 473,502.35

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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.