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Finding the Fourth Proportional to 469,911.83, 648,460.94 and 255,047.28

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Solution

The fourth proportional to 469,911.83, 648,460.94 and 255,047.28 is: 351,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,911.83 : 648,460.94 = 255,047.28 : x
  2. Step 2: Convert to fraction form
    469,911.83/648,460.94 = 255,047.28/x
  3. Step 3: Cross multiply
    469,911.83x = 648,460.94 × 255,047.28
  4. Step 4: Simplify right side
    469,911.83x = 165,388,197,658.01
  5. Step 5: Solve for x
    x = 165,388,197,658.01/469,911.83
  6. Step 6: Final answer
    x = 351,955.81

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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.