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Finding the Fourth Proportional to 263,389.65, 363,478.68 and 142,530.92

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Solution

The fourth proportional to 263,389.65, 363,478.68 and 142,530.92 is: 196,693.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,389.65 : 363,478.68 = 142,530.92 : x
  2. Step 2: Convert to fraction form
    263,389.65/363,478.68 = 142,530.92/x
  3. Step 3: Cross multiply
    263,389.65x = 363,478.68 × 142,530.92
  4. Step 4: Simplify right side
    263,389.65x = 51,806,949,948.13
  5. Step 5: Solve for x
    x = 51,806,949,948.13/263,389.65
  6. Step 6: Final answer
    x = 196,693.19

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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.