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Finding the Fourth Proportional to 315,047.64, 434,776.65 and 179,087.28

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Solution

The fourth proportional to 315,047.64, 434,776.65 and 179,087.28 is: 247,146.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,047.64 : 434,776.65 = 179,087.28 : x
  2. Step 2: Convert to fraction form
    315,047.64/434,776.65 = 179,087.28/x
  3. Step 3: Cross multiply
    315,047.64x = 434,776.65 × 179,087.28
  4. Step 4: Simplify right side
    315,047.64x = 77,862,967,656.01
  5. Step 5: Solve for x
    x = 77,862,967,656.01/315,047.64
  6. Step 6: Final answer
    x = 247,146.65

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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.