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Finding the Fourth Proportional to 371,786.60, 557,681.76 and 91,303.88

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Solution

The fourth proportional to 371,786.60, 557,681.76 and 91,303.88 is: 136,956.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,786.60 : 557,681.76 = 91,303.88 : x
  2. Step 2: Convert to fraction form
    371,786.60/557,681.76 = 91,303.88/x
  3. Step 3: Cross multiply
    371,786.60x = 557,681.76 × 91,303.88
  4. Step 4: Simplify right side
    371,786.60x = 50,918,508,493.23
  5. Step 5: Solve for x
    x = 50,918,508,493.23/371,786.60
  6. Step 6: Final answer
    x = 136,956.28

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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.