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Finding the Fourth Proportional to 548,108.24, 756,393.40 and 306,400.64

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Solution

The fourth proportional to 548,108.24, 756,393.40 and 306,400.64 is: 422,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,108.24 : 756,393.40 = 306,400.64 : x
  2. Step 2: Convert to fraction form
    548,108.24/756,393.40 = 306,400.64/x
  3. Step 3: Cross multiply
    548,108.24x = 756,393.40 × 306,400.64
  4. Step 4: Simplify right side
    548,108.24x = 231,759,421,851.78
  5. Step 5: Solve for x
    x = 231,759,421,851.78/548,108.24
  6. Step 6: Final answer
    x = 422,835.14

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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.