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Finding the Fourth Proportional to 328,454.51, 453,339.78 and 213,533.12

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Solution

The fourth proportional to 328,454.51, 453,339.78 and 213,533.12 is: 294,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,454.51 : 453,339.78 = 213,533.12 : x
  2. Step 2: Convert to fraction form
    328,454.51/453,339.78 = 213,533.12/x
  3. Step 3: Cross multiply
    328,454.51x = 453,339.78 × 213,533.12
  4. Step 4: Simplify right side
    328,454.51x = 96,803,057,976.11
  5. Step 5: Solve for x
    x = 96,803,057,976.11/328,454.51
  6. Step 6: Final answer
    x = 294,722.88

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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.