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Finding the Fourth Proportional to 508,158.51, 701,225.37 and 290,378.43

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Solution

The fourth proportional to 508,158.51, 701,225.37 and 290,378.43 is: 400,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,158.51 : 701,225.37 = 290,378.43 : x
  2. Step 2: Convert to fraction form
    508,158.51/701,225.37 = 290,378.43/x
  3. Step 3: Cross multiply
    508,158.51x = 701,225.37 × 290,378.43
  4. Step 4: Simplify right side
    508,158.51x = 203,620,722,016.77
  5. Step 5: Solve for x
    x = 203,620,722,016.77/508,158.51
  6. Step 6: Final answer
    x = 400,703.17

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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.