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Finding the Fourth Proportional to 216,041.60, 324,062.40 and 122,729.60

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Solution

The fourth proportional to 216,041.60, 324,062.40 and 122,729.60 is: 184,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,041.60 : 324,062.40 = 122,729.60 : x
  2. Step 2: Convert to fraction form
    216,041.60/324,062.40 = 122,729.60/x
  3. Step 3: Cross multiply
    216,041.60x = 324,062.40 × 122,729.60
  4. Step 4: Simplify right side
    216,041.60x = 39,772,048,727.04
  5. Step 5: Solve for x
    x = 39,772,048,727.04/216,041.60
  6. Step 6: Final answer
    x = 184,094.40

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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.