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Finding the Fourth Proportional to 292,859.52, 439,288.32 and 105,870.72

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Solution

The fourth proportional to 292,859.52, 439,288.32 and 105,870.72 is: 158,805.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,859.52 : 439,288.32 = 105,870.72 : x
  2. Step 2: Convert to fraction form
    292,859.52/439,288.32 = 105,870.72/x
  3. Step 3: Cross multiply
    292,859.52x = 439,288.32 × 105,870.72
  4. Step 4: Simplify right side
    292,859.52x = 46,507,770,725.99
  5. Step 5: Solve for x
    x = 46,507,770,725.99/292,859.52
  6. Step 6: Final answer
    x = 158,805.73

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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.