Home / 328,538.37-492,618.92-128,624.70

Finding the Fourth Proportional to 328,538.37, 492,618.92 and 128,624.70

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Solution

The fourth proportional to 328,538.37, 492,618.92 and 128,624.70 is: 192,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,538.37 : 492,618.92 = 128,624.70 : x
  2. Step 2: Convert to fraction form
    328,538.37/492,618.92 = 128,624.70/x
  3. Step 3: Cross multiply
    328,538.37x = 492,618.92 × 128,624.70
  4. Step 4: Simplify right side
    328,538.37x = 63,362,960,799.32
  5. Step 5: Solve for x
    x = 63,362,960,799.32/328,538.37
  6. Step 6: Final answer
    x = 192,863.20

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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.