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Finding the Fourth Proportional to 228,690.47, 343,036.45 and 57,912.08

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Solution

The fourth proportional to 228,690.47, 343,036.45 and 57,912.08 is: 86,868.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,690.47 : 343,036.45 = 57,912.08 : x
  2. Step 2: Convert to fraction form
    228,690.47/343,036.45 = 57,912.08/x
  3. Step 3: Cross multiply
    228,690.47x = 343,036.45 × 57,912.08
  4. Step 4: Simplify right side
    228,690.47x = 19,865,956,069.29
  5. Step 5: Solve for x
    x = 19,865,956,069.29/228,690.47
  6. Step 6: Final answer
    x = 86,868.32

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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.