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Finding the Fourth Proportional to 484,088.68, 668,112.42 and 290,505.16

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Solution

The fourth proportional to 484,088.68, 668,112.42 and 290,505.16 is: 400,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,088.68 : 668,112.42 = 290,505.16 : x
  2. Step 2: Convert to fraction form
    484,088.68/668,112.42 = 290,505.16/x
  3. Step 3: Cross multiply
    484,088.68x = 668,112.42 × 290,505.16
  4. Step 4: Simplify right side
    484,088.68x = 194,090,105,470.09
  5. Step 5: Solve for x
    x = 194,090,105,470.09/484,088.68
  6. Step 6: Final answer
    x = 400,939.15

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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.