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Finding the Fourth Proportional to 419,635.60, 579,099.72 and 249,876.88

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Solution

The fourth proportional to 419,635.60, 579,099.72 and 249,876.88 is: 344,831.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,635.60 : 579,099.72 = 249,876.88 : x
  2. Step 2: Convert to fraction form
    419,635.60/579,099.72 = 249,876.88/x
  3. Step 3: Cross multiply
    419,635.60x = 579,099.72 × 249,876.88
  4. Step 4: Simplify right side
    419,635.60x = 144,703,631,242.47
  5. Step 5: Solve for x
    x = 144,703,631,242.47/419,635.60
  6. Step 6: Final answer
    x = 344,831.64

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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.