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Finding the Fourth Proportional to 328,726.60, 492,801.90 and 223,203.40

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Solution

The fourth proportional to 328,726.60, 492,801.90 and 223,203.40 is: 334,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,726.60 : 492,801.90 = 223,203.40 : x
  2. Step 2: Convert to fraction form
    328,726.60/492,801.90 = 223,203.40/x
  3. Step 3: Cross multiply
    328,726.60x = 492,801.90 × 223,203.40
  4. Step 4: Simplify right side
    328,726.60x = 109,995,059,606.46
  5. Step 5: Solve for x
    x = 109,995,059,606.46/328,726.60
  6. Step 6: Final answer
    x = 334,609.55

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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.