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Finding the Fourth Proportional to 612,633.47, 918,994.08 and 163,351.98

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Solution

The fourth proportional to 612,633.47, 918,994.08 and 163,351.98 is: 245,039.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,633.47 : 918,994.08 = 163,351.98 : x
  2. Step 2: Convert to fraction form
    612,633.47/918,994.08 = 163,351.98/x
  3. Step 3: Cross multiply
    612,633.47x = 918,994.08 × 163,351.98
  4. Step 4: Simplify right side
    612,633.47x = 150,119,502,576.28
  5. Step 5: Solve for x
    x = 150,119,502,576.28/612,633.47
  6. Step 6: Final answer
    x = 245,039.67

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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.