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Finding the Fourth Proportional to 555,210.36, 766,143.70 and 325,743.48

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Solution

The fourth proportional to 555,210.36, 766,143.70 and 325,743.48 is: 449,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,210.36 : 766,143.70 = 325,743.48 : x
  2. Step 2: Convert to fraction form
    555,210.36/766,143.70 = 325,743.48/x
  3. Step 3: Cross multiply
    555,210.36x = 766,143.70 × 325,743.48
  4. Step 4: Simplify right side
    555,210.36x = 249,566,314,203.72
  5. Step 5: Solve for x
    x = 249,566,314,203.72/555,210.36
  6. Step 6: Final answer
    x = 449,498.66

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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.