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Finding the Fourth Proportional to 354,181.75, 531,075.76 and 143,573.65

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Solution

The fourth proportional to 354,181.75, 531,075.76 and 143,573.65 is: 215,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,181.75 : 531,075.76 = 143,573.65 : x
  2. Step 2: Convert to fraction form
    354,181.75/531,075.76 = 143,573.65/x
  3. Step 3: Cross multiply
    354,181.75x = 531,075.76 × 143,573.65
  4. Step 4: Simplify right side
    354,181.75x = 76,248,483,603.10
  5. Step 5: Solve for x
    x = 76,248,483,603.10/354,181.75
  6. Step 6: Final answer
    x = 215,280.67

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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.