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Finding the Fourth Proportional to 216,903.60, 325,355.40 and 111,927.60

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Solution

The fourth proportional to 216,903.60, 325,355.40 and 111,927.60 is: 167,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,903.60 : 325,355.40 = 111,927.60 : x
  2. Step 2: Convert to fraction form
    216,903.60/325,355.40 = 111,927.60/x
  3. Step 3: Cross multiply
    216,903.60x = 325,355.40 × 111,927.60
  4. Step 4: Simplify right side
    216,903.60x = 36,416,249,069.04
  5. Step 5: Solve for x
    x = 36,416,249,069.04/216,903.60
  6. Step 6: Final answer
    x = 167,891.40

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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.