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Finding the Fourth Proportional to 391,118.51, 586,677.77 and 251,762.87

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Solution

The fourth proportional to 391,118.51, 586,677.77 and 251,762.87 is: 377,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,118.51 : 586,677.77 = 251,762.87 : x
  2. Step 2: Convert to fraction form
    391,118.51/586,677.77 = 251,762.87/x
  3. Step 3: Cross multiply
    391,118.51x = 586,677.77 × 251,762.87
  4. Step 4: Simplify right side
    391,118.51x = 147,703,674,948.20
  5. Step 5: Solve for x
    x = 147,703,674,948.20/391,118.51
  6. Step 6: Final answer
    x = 377,644.30

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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.