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Finding the Fourth Proportional to 296,495.40, 445,617.90 and 258,004.20

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Solution

The fourth proportional to 296,495.40, 445,617.90 and 258,004.20 is: 387,767.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,495.40 : 445,617.90 = 258,004.20 : x
  2. Step 2: Convert to fraction form
    296,495.40/445,617.90 = 258,004.20/x
  3. Step 3: Cross multiply
    296,495.40x = 445,617.90 × 258,004.20
  4. Step 4: Simplify right side
    296,495.40x = 114,971,289,795.18
  5. Step 5: Solve for x
    x = 114,971,289,795.18/296,495.40
  6. Step 6: Final answer
    x = 387,767.53

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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.