Home / 486,989.90-672,033.52-272,131.72

Finding the Fourth Proportional to 486,989.90, 672,033.52 and 272,131.72

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Solution

The fourth proportional to 486,989.90, 672,033.52 and 272,131.72 is: 375,534.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,989.90 : 672,033.52 = 272,131.72 : x
  2. Step 2: Convert to fraction form
    486,989.90/672,033.52 = 272,131.72/x
  3. Step 3: Cross multiply
    486,989.90x = 672,033.52 × 272,131.72
  4. Step 4: Simplify right side
    486,989.90x = 182,881,637,695.25
  5. Step 5: Solve for x
    x = 182,881,637,695.25/486,989.90
  6. Step 6: Final answer
    x = 375,534.77

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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.