Home / 256,566.72-384,831.84-79,055.28

Finding the Fourth Proportional to 256,566.72, 384,831.84 and 79,055.28

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Solution

The fourth proportional to 256,566.72, 384,831.84 and 79,055.28 is: 118,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,566.72 : 384,831.84 = 79,055.28 : x
  2. Step 2: Convert to fraction form
    256,566.72/384,831.84 = 79,055.28/x
  3. Step 3: Cross multiply
    256,566.72x = 384,831.84 × 79,055.28
  4. Step 4: Simplify right side
    256,566.72x = 30,422,988,864.12
  5. Step 5: Solve for x
    x = 30,422,988,864.12/256,566.72
  6. Step 6: Final answer
    x = 118,577.30

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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.