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Finding the Fourth Proportional to 343,669.40, 514,940.34 and 330,547.40

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Solution

The fourth proportional to 343,669.40, 514,940.34 and 330,547.40 is: 495,278.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,669.40 : 514,940.34 = 330,547.40 : x
  2. Step 2: Convert to fraction form
    343,669.40/514,940.34 = 330,547.40/x
  3. Step 3: Cross multiply
    343,669.40x = 514,940.34 × 330,547.40
  4. Step 4: Simplify right side
    343,669.40x = 170,212,190,542.12
  5. Step 5: Solve for x
    x = 170,212,190,542.12/343,669.40
  6. Step 6: Final answer
    x = 495,278.87

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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.