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Finding the Fourth Proportional to 388,527.45, 536,159.81 and 216,445.18

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Solution

The fourth proportional to 388,527.45, 536,159.81 and 216,445.18 is: 298,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,527.45 : 536,159.81 = 216,445.18 : x
  2. Step 2: Convert to fraction form
    388,527.45/536,159.81 = 216,445.18/x
  3. Step 3: Cross multiply
    388,527.45x = 536,159.81 × 216,445.18
  4. Step 4: Simplify right side
    388,527.45x = 116,049,204,161.59
  5. Step 5: Solve for x
    x = 116,049,204,161.59/388,527.45
  6. Step 6: Final answer
    x = 298,689.85

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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.