Home / 455,290.76-628,311.28-251,341.20

Finding the Fourth Proportional to 455,290.76, 628,311.28 and 251,341.20

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Solution

The fourth proportional to 455,290.76, 628,311.28 and 251,341.20 is: 346,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,290.76 : 628,311.28 = 251,341.20 : x
  2. Step 2: Convert to fraction form
    455,290.76/628,311.28 = 251,341.20/x
  3. Step 3: Cross multiply
    455,290.76x = 628,311.28 × 251,341.20
  4. Step 4: Simplify right side
    455,290.76x = 157,920,511,088.74
  5. Step 5: Solve for x
    x = 157,920,511,088.74/455,290.76
  6. Step 6: Final answer
    x = 346,856.39

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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.