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Finding the Fourth Proportional to 559,792.91, 772,525.40 and 305,143.89

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Solution

The fourth proportional to 559,792.91, 772,525.40 and 305,143.89 is: 421,104.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,792.91 : 772,525.40 = 305,143.89 : x
  2. Step 2: Convert to fraction form
    559,792.91/772,525.40 = 305,143.89/x
  3. Step 3: Cross multiply
    559,792.91x = 772,525.40 × 305,143.89
  4. Step 4: Simplify right side
    559,792.91x = 235,731,404,154.09
  5. Step 5: Solve for x
    x = 235,731,404,154.09/559,792.91
  6. Step 6: Final answer
    x = 421,104.67

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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.