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Finding the Fourth Proportional to 319,800.64, 479,700.24 and 130,339.84

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Solution

The fourth proportional to 319,800.64, 479,700.24 and 130,339.84 is: 195,509.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,800.64 : 479,700.24 = 130,339.84 : x
  2. Step 2: Convert to fraction form
    319,800.64/479,700.24 = 130,339.84/x
  3. Step 3: Cross multiply
    319,800.64x = 479,700.24 × 130,339.84
  4. Step 4: Simplify right side
    319,800.64x = 62,524,052,529.56
  5. Step 5: Solve for x
    x = 62,524,052,529.56/319,800.64
  6. Step 6: Final answer
    x = 195,509.47

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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.