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Finding the Fourth Proportional to 487,980.48, 673,406.09 and 270,168.28

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Solution

The fourth proportional to 487,980.48, 673,406.09 and 270,168.28 is: 372,828.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,980.48 : 673,406.09 = 270,168.28 : x
  2. Step 2: Convert to fraction form
    487,980.48/673,406.09 = 270,168.28/x
  3. Step 3: Cross multiply
    487,980.48x = 673,406.09 × 270,168.28
  4. Step 4: Simplify right side
    487,980.48x = 181,932,963,055.60
  5. Step 5: Solve for x
    x = 181,932,963,055.60/487,980.48
  6. Step 6: Final answer
    x = 372,828.36

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1.5x scale

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.