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Finding the Fourth Proportional to 213,558.69, 320,316.15 and 55,766.64

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Solution

The fourth proportional to 213,558.69, 320,316.15 and 55,766.64 is: 83,644.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,558.69 : 320,316.15 = 55,766.64 : x
  2. Step 2: Convert to fraction form
    213,558.69/320,316.15 = 55,766.64/x
  3. Step 3: Cross multiply
    213,558.69x = 320,316.15 × 55,766.64
  4. Step 4: Simplify right side
    213,558.69x = 17,862,955,423.24
  5. Step 5: Solve for x
    x = 17,862,955,423.24/213,558.69
  6. Step 6: Final answer
    x = 83,644.25

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1.5x scale

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.