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Finding the Fourth Proportional to 388,504.96, 536,153.39 and 216,422.72

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Solution

The fourth proportional to 388,504.96, 536,153.39 and 216,422.72 is: 298,672.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,504.96 : 536,153.39 = 216,422.72 : x
  2. Step 2: Convert to fraction form
    388,504.96/536,153.39 = 216,422.72/x
  3. Step 3: Cross multiply
    388,504.96x = 536,153.39 × 216,422.72
  4. Step 4: Simplify right side
    388,504.96x = 116,035,774,459.96
  5. Step 5: Solve for x
    x = 116,035,774,459.96/388,504.96
  6. Step 6: Final answer
    x = 298,672.57

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1.5x scale

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.