Home / 487,090.60-672,180.78-272,228.20

Finding the Fourth Proportional to 487,090.60, 672,180.78 and 272,228.20

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Solution

The fourth proportional to 487,090.60, 672,180.78 and 272,228.20 is: 375,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,090.60 : 672,180.78 = 272,228.20 : x
  2. Step 2: Convert to fraction form
    487,090.60/672,180.78 = 272,228.20/x
  3. Step 3: Cross multiply
    487,090.60x = 672,180.78 × 272,228.20
  4. Step 4: Simplify right side
    487,090.60x = 182,986,563,814.00
  5. Step 5: Solve for x
    x = 182,986,563,814.00/487,090.60
  6. Step 6: Final answer
    x = 375,672.54

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1.5x scale

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.