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Finding the Fourth Proportional to 371,319.84, 556,990.56 and 90,837

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Solution

The fourth proportional to 371,319.84, 556,990.56 and 90,837 is: 136,258.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,319.84 : 556,990.56 = 90,837 : x
  2. Step 2: Convert to fraction form
    371,319.84/556,990.56 = 90,837/x
  3. Step 3: Cross multiply
    371,319.84x = 556,990.56 × 90,837
  4. Step 4: Simplify right side
    371,319.84x = 50,595,351,498.72
  5. Step 5: Solve for x
    x = 50,595,351,498.72/371,319.84
  6. Step 6: Final answer
    x = 136,258.14

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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.