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Finding the Fourth Proportional to 388,615.15, 536,280.83 and 216,532.43

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Solution

The fourth proportional to 388,615.15, 536,280.83 and 216,532.43 is: 298,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,615.15 : 536,280.83 = 216,532.43 : x
  2. Step 2: Convert to fraction form
    388,615.15/536,280.83 = 216,532.43/x
  3. Step 3: Cross multiply
    388,615.15x = 536,280.83 × 216,532.43
  4. Step 4: Simplify right side
    388,615.15x = 116,122,190,341.30
  5. Step 5: Solve for x
    x = 116,122,190,341.30/388,615.15
  6. Step 6: Final answer
    x = 298,810.25

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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.