Home / 487,429.60-672,648.24-272,567.20

Finding the Fourth Proportional to 487,429.60, 672,648.24 and 272,567.20

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Solution

The fourth proportional to 487,429.60, 672,648.24 and 272,567.20 is: 376,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,429.60 : 672,648.24 = 272,567.20 : x
  2. Step 2: Convert to fraction form
    487,429.60/672,648.24 = 272,567.20/x
  3. Step 3: Cross multiply
    487,429.60x = 672,648.24 × 272,567.20
  4. Step 4: Simplify right side
    487,429.60x = 183,341,847,361.73
  5. Step 5: Solve for x
    x = 183,341,847,361.73/487,429.60
  6. Step 6: Final answer
    x = 376,140.16

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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.