Home / 388,190.72-535,913.46-272,260.21

Finding the Fourth Proportional to 388,190.72, 535,913.46 and 272,260.21

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Solution

The fourth proportional to 388,190.72, 535,913.46 and 272,260.21 is: 375,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,190.72 : 535,913.46 = 272,260.21 : x
  2. Step 2: Convert to fraction form
    388,190.72/535,913.46 = 272,260.21/x
  3. Step 3: Cross multiply
    388,190.72x = 535,913.46 × 272,260.21
  4. Step 4: Simplify right side
    388,190.72x = 145,907,911,161.43
  5. Step 5: Solve for x
    x = 145,907,911,161.43/388,190.72
  6. Step 6: Final answer
    x = 375,866.56

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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.