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Finding the Fourth Proportional to 212,490, 293,236.20 and 118,282

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Solution

The fourth proportional to 212,490, 293,236.20 and 118,282 is: 163,229.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,490 : 293,236.20 = 118,282 : x
  2. Step 2: Convert to fraction form
    212,490/293,236.20 = 118,282/x
  3. Step 3: Cross multiply
    212,490x = 293,236.20 × 118,282
  4. Step 4: Simplify right side
    212,490x = 34,684,564,208.40
  5. Step 5: Solve for x
    x = 34,684,564,208.40/212,490
  6. Step 6: Final answer
    x = 163,229.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.