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Finding the Fourth Proportional to 469,178.87, 648,004.93 and 308,750.12

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Solution

The fourth proportional to 469,178.87, 648,004.93 and 308,750.12 is: 426,429.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,178.87 : 648,004.93 = 308,750.12 : x
  2. Step 2: Convert to fraction form
    469,178.87/648,004.93 = 308,750.12/x
  3. Step 3: Cross multiply
    469,178.87x = 648,004.93 × 308,750.12
  4. Step 4: Simplify right side
    469,178.87x = 200,071,598,354.34
  5. Step 5: Solve for x
    x = 200,071,598,354.34/469,178.87
  6. Step 6: Final answer
    x = 426,429.26

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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.