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Finding the Fourth Proportional to 371,783.46, 513,107.67 and 210,690.39

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Solution

The fourth proportional to 371,783.46, 513,107.67 and 210,690.39 is: 290,779.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,783.46 : 513,107.67 = 210,690.39 : x
  2. Step 2: Convert to fraction form
    371,783.46/513,107.67 = 210,690.39/x
  3. Step 3: Cross multiply
    371,783.46x = 513,107.67 × 210,690.39
  4. Step 4: Simplify right side
    371,783.46x = 108,106,855,104.29
  5. Step 5: Solve for x
    x = 108,106,855,104.29/371,783.46
  6. Step 6: Final answer
    x = 290,779.09

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1.5x scale

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.