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Finding the Fourth Proportional to 643,280.07, 964,550.94 and 243,665.97

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Solution

The fourth proportional to 643,280.07, 964,550.94 and 243,665.97 is: 365,359.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,280.07 : 964,550.94 = 243,665.97 : x
  2. Step 2: Convert to fraction form
    643,280.07/964,550.94 = 243,665.97/x
  3. Step 3: Cross multiply
    643,280.07x = 964,550.94 × 243,665.97
  4. Step 4: Simplify right side
    643,280.07x = 235,028,240,409.51
  5. Step 5: Solve for x
    x = 235,028,240,409.51/643,280.07
  6. Step 6: Final answer
    x = 365,359.12

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1.5x scale

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.