Home / 487,015.02-672,078.78-272,155.03

Finding the Fourth Proportional to 487,015.02, 672,078.78 and 272,155.03

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Solution

The fourth proportional to 487,015.02, 672,078.78 and 272,155.03 is: 375,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,015.02 : 672,078.78 = 272,155.03 : x
  2. Step 2: Convert to fraction form
    487,015.02/672,078.78 = 272,155.03/x
  3. Step 3: Cross multiply
    487,015.02x = 672,078.78 × 272,155.03
  4. Step 4: Simplify right side
    487,015.02x = 182,909,620,533.26
  5. Step 5: Solve for x
    x = 182,909,620,533.26/487,015.02
  6. Step 6: Final answer
    x = 375,572.85

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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.