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Finding the Fourth Proportional to 326,951.91, 490,130.80 and 291,522.51

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Solution

The fourth proportional to 326,951.91, 490,130.80 and 291,522.51 is: 437,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,951.91 : 490,130.80 = 291,522.51 : x
  2. Step 2: Convert to fraction form
    326,951.91/490,130.80 = 291,522.51/x
  3. Step 3: Cross multiply
    326,951.91x = 490,130.80 × 291,522.51
  4. Step 4: Simplify right side
    326,951.91x = 142,884,160,315.50
  5. Step 5: Solve for x
    x = 142,884,160,315.50/326,951.91
  6. Step 6: Final answer
    x = 437,018.89

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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.