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Finding the Fourth Proportional to 556,887.91, 768,505.88 and 302,239.21

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Solution

The fourth proportional to 556,887.91, 768,505.88 and 302,239.21 is: 417,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,887.91 : 768,505.88 = 302,239.21 : x
  2. Step 2: Convert to fraction form
    556,887.91/768,505.88 = 302,239.21/x
  3. Step 3: Cross multiply
    556,887.91x = 768,505.88 × 302,239.21
  4. Step 4: Simplify right side
    556,887.91x = 232,272,610,051.56
  5. Step 5: Solve for x
    x = 232,272,610,051.56/556,887.91
  6. Step 6: Final answer
    x = 417,090.42

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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.