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Finding the Fourth Proportional to 391,583.16, 540,263.37 and 219,477.27

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Solution

The fourth proportional to 391,583.16, 540,263.37 and 219,477.27 is: 302,810.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,583.16 : 540,263.37 = 219,477.27 : x
  2. Step 2: Convert to fraction form
    391,583.16/540,263.37 = 219,477.27/x
  3. Step 3: Cross multiply
    391,583.16x = 540,263.37 × 219,477.27
  4. Step 4: Simplify right side
    391,583.16x = 118,575,529,528.60
  5. Step 5: Solve for x
    x = 118,575,529,528.60/391,583.16
  6. Step 6: Final answer
    x = 302,810.59

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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.