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Finding the Fourth Proportional to 486,969.48, 672,004.99 and 272,111.31

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Solution

The fourth proportional to 486,969.48, 672,004.99 and 272,111.31 is: 375,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,969.48 : 672,004.99 = 272,111.31 : x
  2. Step 2: Convert to fraction form
    486,969.48/672,004.99 = 272,111.31/x
  3. Step 3: Cross multiply
    486,969.48x = 672,004.99 × 272,111.31
  4. Step 4: Simplify right side
    486,969.48x = 182,860,158,495.58
  5. Step 5: Solve for x
    x = 182,860,158,495.58/486,969.48
  6. Step 6: Final answer
    x = 375,506.40

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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.