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Finding the Fourth Proportional to 301,561.80, 452,342.70 and 91,172.40

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Solution

The fourth proportional to 301,561.80, 452,342.70 and 91,172.40 is: 136,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,561.80 : 452,342.70 = 91,172.40 : x
  2. Step 2: Convert to fraction form
    301,561.80/452,342.70 = 91,172.40/x
  3. Step 3: Cross multiply
    301,561.80x = 452,342.70 × 91,172.40
  4. Step 4: Simplify right side
    301,561.80x = 41,241,169,581.48
  5. Step 5: Solve for x
    x = 41,241,169,581.48/301,561.80
  6. Step 6: Final answer
    x = 136,758.60

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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.