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Finding the Fourth Proportional to 326,907.23, 490,360.01 and 87,021.14

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Solution

The fourth proportional to 326,907.23, 490,360.01 and 87,021.14 is: 130,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,907.23 : 490,360.01 = 87,021.14 : x
  2. Step 2: Convert to fraction form
    326,907.23/490,360.01 = 87,021.14/x
  3. Step 3: Cross multiply
    326,907.23x = 490,360.01 × 87,021.14
  4. Step 4: Simplify right side
    326,907.23x = 42,671,684,193.71
  5. Step 5: Solve for x
    x = 42,671,684,193.71/326,907.23
  6. Step 6: Final answer
    x = 130,531.48

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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.