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Finding the Fourth Proportional to 556,880.78, 768,495.78 and 302,231.96

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Solution

The fourth proportional to 556,880.78, 768,495.78 and 302,231.96 is: 417,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,880.78 : 768,495.78 = 302,231.96 : x
  2. Step 2: Convert to fraction form
    556,880.78/768,495.78 = 302,231.96/x
  3. Step 3: Cross multiply
    556,880.78x = 768,495.78 × 302,231.96
  4. Step 4: Simplify right side
    556,880.78x = 232,263,988,895.74
  5. Step 5: Solve for x
    x = 232,263,988,895.74/556,880.78
  6. Step 6: Final answer
    x = 417,080.28

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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.