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Finding the Fourth Proportional to 612,578.70, 918,898.12 and 163,303.59

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Solution

The fourth proportional to 612,578.70, 918,898.12 and 163,303.59 is: 244,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,578.70 : 918,898.12 = 163,303.59 : x
  2. Step 2: Convert to fraction form
    612,578.70/918,898.12 = 163,303.59/x
  3. Step 3: Cross multiply
    612,578.70x = 918,898.12 × 163,303.59
  4. Step 4: Simplify right side
    612,578.70x = 150,059,365,490.25
  5. Step 5: Solve for x
    x = 150,059,365,490.25/612,578.70
  6. Step 6: Final answer
    x = 244,963.41

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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.