Home / 487,090.18-672,205.20-272,230.24

Finding the Fourth Proportional to 487,090.18, 672,205.20 and 272,230.24

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Solution

The fourth proportional to 487,090.18, 672,205.20 and 272,230.24 is: 375,689.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,090.18 : 672,205.20 = 272,230.24 : x
  2. Step 2: Convert to fraction form
    487,090.18/672,205.20 = 272,230.24/x
  3. Step 3: Cross multiply
    487,090.18x = 672,205.20 × 272,230.24
  4. Step 4: Simplify right side
    487,090.18x = 182,994,585,671.78
  5. Step 5: Solve for x
    x = 182,994,585,671.78/487,090.18
  6. Step 6: Final answer
    x = 375,689.34

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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.