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Finding the Fourth Proportional to 419,711.68, 579,370.08 and 249,913

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Solution

The fourth proportional to 419,711.68, 579,370.08 and 249,913 is: 344,979.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,711.68 : 579,370.08 = 249,913 : x
  2. Step 2: Convert to fraction form
    419,711.68/579,370.08 = 249,913/x
  3. Step 3: Cross multiply
    419,711.68x = 579,370.08 × 249,913
  4. Step 4: Simplify right side
    419,711.68x = 144,792,114,803.04
  5. Step 5: Solve for x
    x = 144,792,114,803.04/419,711.68
  6. Step 6: Final answer
    x = 344,979.95

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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.