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Finding the Fourth Proportional to 540,805.45, 811,146.21 and 141,484.77

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Solution

The fourth proportional to 540,805.45, 811,146.21 and 141,484.77 is: 212,210.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,805.45 : 811,146.21 = 141,484.77 : x
  2. Step 2: Convert to fraction form
    540,805.45/811,146.21 = 141,484.77/x
  3. Step 3: Cross multiply
    540,805.45x = 811,146.21 × 141,484.77
  4. Step 4: Simplify right side
    540,805.45x = 114,764,834,958.22
  5. Step 5: Solve for x
    x = 114,764,834,958.22/540,805.45
  6. Step 6: Final answer
    x = 212,210.94

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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.