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Finding the Fourth Proportional to 372,661.20, 558,991.80 and 319,006.80

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Solution

The fourth proportional to 372,661.20, 558,991.80 and 319,006.80 is: 478,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,661.20 : 558,991.80 = 319,006.80 : x
  2. Step 2: Convert to fraction form
    372,661.20/558,991.80 = 319,006.80/x
  3. Step 3: Cross multiply
    372,661.20x = 558,991.80 × 319,006.80
  4. Step 4: Simplify right side
    372,661.20x = 178,322,185,344.24
  5. Step 5: Solve for x
    x = 178,322,185,344.24/372,661.20
  6. Step 6: Final answer
    x = 478,510.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.