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Finding the Fourth Proportional to 388,702.02, 536,425.38 and 216,620.22

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Solution

The fourth proportional to 388,702.02, 536,425.38 and 216,620.22 is: 298,945.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,702.02 : 536,425.38 = 216,620.22 : x
  2. Step 2: Convert to fraction form
    388,702.02/536,425.38 = 216,620.22/x
  3. Step 3: Cross multiply
    388,702.02x = 536,425.38 × 216,620.22
  4. Step 4: Simplify right side
    388,702.02x = 116,200,583,829.18
  5. Step 5: Solve for x
    x = 116,200,583,829.18/388,702.02
  6. Step 6: Final answer
    x = 298,945.15

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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.