Home / 455,284.02-628,288.09-251,330.57

Finding the Fourth Proportional to 455,284.02, 628,288.09 and 251,330.57

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Solution

The fourth proportional to 455,284.02, 628,288.09 and 251,330.57 is: 346,834.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,284.02 : 628,288.09 = 251,330.57 : x
  2. Step 2: Convert to fraction form
    455,284.02/628,288.09 = 251,330.57/x
  3. Step 3: Cross multiply
    455,284.02x = 628,288.09 × 251,330.57
  4. Step 4: Simplify right side
    455,284.02x = 157,908,003,783.91
  5. Step 5: Solve for x
    x = 157,908,003,783.91/455,284.02
  6. Step 6: Final answer
    x = 346,834.06

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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.