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Finding the Fourth Proportional to 216,561.60, 324,842.40 and 91,886.40

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Solution

The fourth proportional to 216,561.60, 324,842.40 and 91,886.40 is: 137,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,561.60 : 324,842.40 = 91,886.40 : x
  2. Step 2: Convert to fraction form
    216,561.60/324,842.40 = 91,886.40/x
  3. Step 3: Cross multiply
    216,561.60x = 324,842.40 × 91,886.40
  4. Step 4: Simplify right side
    216,561.60x = 29,848,598,703.36
  5. Step 5: Solve for x
    x = 29,848,598,703.36/216,561.60
  6. Step 6: Final answer
    x = 137,829.60

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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.