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Finding the Fourth Proportional to 290,767.65, 436,649.69 and 157,907.40

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Solution

The fourth proportional to 290,767.65, 436,649.69 and 157,907.40 is: 237,131.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,767.65 : 436,649.69 = 157,907.40 : x
  2. Step 2: Convert to fraction form
    290,767.65/436,649.69 = 157,907.40/x
  3. Step 3: Cross multiply
    290,767.65x = 436,649.69 × 157,907.40
  4. Step 4: Simplify right side
    290,767.65x = 68,950,217,258.71
  5. Step 5: Solve for x
    x = 68,950,217,258.71/290,767.65
  6. Step 6: Final answer
    x = 237,131.67

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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.