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Finding the Fourth Proportional to 612,179.16, 918,267.48 and 162,900

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Solution

The fourth proportional to 612,179.16, 918,267.48 and 162,900 is: 244,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,179.16 : 918,267.48 = 162,900 : x
  2. Step 2: Convert to fraction form
    612,179.16/918,267.48 = 162,900/x
  3. Step 3: Cross multiply
    612,179.16x = 918,267.48 × 162,900
  4. Step 4: Simplify right side
    612,179.16x = 149,585,772,492
  5. Step 5: Solve for x
    x = 149,585,772,492/612,179.16
  6. Step 6: Final answer
    x = 244,349.66

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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.