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Finding the Fourth Proportional to 388,527.95, 536,160.50 and 216,445.68

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Solution

The fourth proportional to 388,527.95, 536,160.50 and 216,445.68 is: 298,690.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,527.95 : 536,160.50 = 216,445.68 : x
  2. Step 2: Convert to fraction form
    388,527.95/536,160.50 = 216,445.68/x
  3. Step 3: Cross multiply
    388,527.95x = 536,160.50 × 216,445.68
  4. Step 4: Simplify right side
    388,527.95x = 116,049,622,929.41
  5. Step 5: Solve for x
    x = 116,049,622,929.41/388,527.95
  6. Step 6: Final answer
    x = 298,690.54

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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.