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Finding the Fourth Proportional to 388,555.86, 536,223.57 and 216,473.67

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Solution

The fourth proportional to 388,555.86, 536,223.57 and 216,473.67 is: 298,742.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,555.86 : 536,223.57 = 216,473.67 : x
  2. Step 2: Convert to fraction form
    388,555.86/536,223.57 = 216,473.67/x
  3. Step 3: Cross multiply
    388,555.86x = 536,223.57 × 216,473.67
  4. Step 4: Simplify right side
    388,555.86x = 116,078,284,138.40
  5. Step 5: Solve for x
    x = 116,078,284,138.40/388,555.86
  6. Step 6: Final answer
    x = 298,742.85

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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.