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Finding the Fourth Proportional to 548,291.07, 756,802.58 and 318,902.31

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Solution

The fourth proportional to 548,291.07, 756,802.58 and 318,902.31 is: 440,178.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,291.07 : 756,802.58 = 318,902.31 : x
  2. Step 2: Convert to fraction form
    548,291.07/756,802.58 = 318,902.31/x
  3. Step 3: Cross multiply
    548,291.07x = 756,802.58 × 318,902.31
  4. Step 4: Simplify right side
    548,291.07x = 241,346,089,381.45
  5. Step 5: Solve for x
    x = 241,346,089,381.45/548,291.07
  6. Step 6: Final answer
    x = 440,178.77

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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.