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Finding the Fourth Proportional to 245,348.51, 368,022.29 and 76,881.74

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Solution

The fourth proportional to 245,348.51, 368,022.29 and 76,881.74 is: 115,322.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,348.51 : 368,022.29 = 76,881.74 : x
  2. Step 2: Convert to fraction form
    245,348.51/368,022.29 = 76,881.74/x
  3. Step 3: Cross multiply
    245,348.51x = 368,022.29 × 76,881.74
  4. Step 4: Simplify right side
    245,348.51x = 28,294,191,789.46
  5. Step 5: Solve for x
    x = 28,294,191,789.46/245,348.51
  6. Step 6: Final answer
    x = 115,322.45

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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.