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Finding the Fourth Proportional to 339,866.11, 509,799.98 and 103,210.57

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Solution

The fourth proportional to 339,866.11, 509,799.98 and 103,210.57 is: 154,816.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,866.11 : 509,799.98 = 103,210.57 : x
  2. Step 2: Convert to fraction form
    339,866.11/509,799.98 = 103,210.57/x
  3. Step 3: Cross multiply
    339,866.11x = 509,799.98 × 103,210.57
  4. Step 4: Simplify right side
    339,866.11x = 52,616,746,005.74
  5. Step 5: Solve for x
    x = 52,616,746,005.74/339,866.11
  6. Step 6: Final answer
    x = 154,816.10

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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.