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Finding the Fourth Proportional to 388,880.75, 536,655.64 and 210,032.75

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Solution

The fourth proportional to 388,880.75, 536,655.64 and 210,032.75 is: 289,845.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,880.75 : 536,655.64 = 210,032.75 : x
  2. Step 2: Convert to fraction form
    388,880.75/536,655.64 = 210,032.75/x
  3. Step 3: Cross multiply
    388,880.75x = 536,655.64 × 210,032.75
  4. Step 4: Simplify right side
    388,880.75x = 112,715,259,872.21
  5. Step 5: Solve for x
    x = 112,715,259,872.21/388,880.75
  6. Step 6: Final answer
    x = 289,845.31

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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.