Home / 285,274.09-427,916-107,864.65

Finding the Fourth Proportional to 285,274.09, 427,916 and 107,864.65

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Solution

The fourth proportional to 285,274.09, 427,916 and 107,864.65 is: 161,798.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,274.09 : 427,916 = 107,864.65 : x
  2. Step 2: Convert to fraction form
    285,274.09/427,916 = 107,864.65/x
  3. Step 3: Cross multiply
    285,274.09x = 427,916 × 107,864.65
  4. Step 4: Simplify right side
    285,274.09x = 46,157,009,569.40
  5. Step 5: Solve for x
    x = 46,157,009,569.40/285,274.09
  6. Step 6: Final answer
    x = 161,798.81

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1.5x scale

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.