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Finding the Fourth Proportional to 386,704.04, 533,655.22 and 216,941.81

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Solution

The fourth proportional to 386,704.04, 533,655.22 and 216,941.81 is: 299,381.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,704.04 : 533,655.22 = 216,941.81 : x
  2. Step 2: Convert to fraction form
    386,704.04/533,655.22 = 216,941.81/x
  3. Step 3: Cross multiply
    386,704.04x = 533,655.22 × 216,941.81
  4. Step 4: Simplify right side
    386,704.04x = 115,772,128,258.04
  5. Step 5: Solve for x
    x = 115,772,128,258.04/386,704.04
  6. Step 6: Final answer
    x = 299,381.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.