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Finding the Fourth Proportional to 374,367.79, 516,733.53 and 221,459.13

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Solution

The fourth proportional to 374,367.79, 516,733.53 and 221,459.13 is: 305,676.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,367.79 : 516,733.53 = 221,459.13 : x
  2. Step 2: Convert to fraction form
    374,367.79/516,733.53 = 221,459.13/x
  3. Step 3: Cross multiply
    374,367.79x = 516,733.53 × 221,459.13
  4. Step 4: Simplify right side
    374,367.79x = 114,435,357,165.16
  5. Step 5: Solve for x
    x = 114,435,357,165.16/374,367.79
  6. Step 6: Final answer
    x = 305,676.29

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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.