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Finding the Fourth Proportional to 339,689.76, 468,578.04 and 210,569.28

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Solution

The fourth proportional to 339,689.76, 468,578.04 and 210,569.28 is: 290,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,689.76 : 468,578.04 = 210,569.28 : x
  2. Step 2: Convert to fraction form
    339,689.76/468,578.04 = 210,569.28/x
  3. Step 3: Cross multiply
    339,689.76x = 468,578.04 × 210,569.28
  4. Step 4: Simplify right side
    339,689.76x = 98,668,140,506.61
  5. Step 5: Solve for x
    x = 98,668,140,506.61/339,689.76
  6. Step 6: Final answer
    x = 290,465.45

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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.