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Finding the Fourth Proportional to 318,980.84, 440,376.82 and 211,696.34

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Solution

The fourth proportional to 318,980.84, 440,376.82 and 211,696.34 is: 292,262.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,980.84 : 440,376.82 = 211,696.34 : x
  2. Step 2: Convert to fraction form
    318,980.84/440,376.82 = 211,696.34/x
  3. Step 3: Cross multiply
    318,980.84x = 440,376.82 × 211,696.34
  4. Step 4: Simplify right side
    318,980.84x = 93,226,158,283.71
  5. Step 5: Solve for x
    x = 93,226,158,283.71/318,980.84
  6. Step 6: Final answer
    x = 292,262.57

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1.5x scale

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.