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Finding the Fourth Proportional to 555,053.18, 765,973.38 and 300,404.36

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Solution

The fourth proportional to 555,053.18, 765,973.38 and 300,404.36 is: 414,558.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,053.18 : 765,973.38 = 300,404.36 : x
  2. Step 2: Convert to fraction form
    555,053.18/765,973.38 = 300,404.36/x
  3. Step 3: Cross multiply
    555,053.18x = 765,973.38 × 300,404.36
  4. Step 4: Simplify right side
    555,053.18x = 230,101,739,166.07
  5. Step 5: Solve for x
    x = 230,101,739,166.07/555,053.18
  6. Step 6: Final answer
    x = 414,558.01

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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.