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Finding the Fourth Proportional to 372,393.06, 512,923.50 and 286,187.10

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Solution

The fourth proportional to 372,393.06, 512,923.50 and 286,187.10 is: 394,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,393.06 : 512,923.50 = 286,187.10 : x
  2. Step 2: Convert to fraction form
    372,393.06/512,923.50 = 286,187.10/x
  3. Step 3: Cross multiply
    372,393.06x = 512,923.50 × 286,187.10
  4. Step 4: Simplify right side
    372,393.06x = 146,792,088,986.85
  5. Step 5: Solve for x
    x = 146,792,088,986.85/372,393.06
  6. Step 6: Final answer
    x = 394,185.89

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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.