Home / 475,085.16-655,682.74-291,291.21

Finding the Fourth Proportional to 475,085.16, 655,682.74 and 291,291.21

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Solution

The fourth proportional to 475,085.16, 655,682.74 and 291,291.21 is: 402,021.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,085.16 : 655,682.74 = 291,291.21 : x
  2. Step 2: Convert to fraction form
    475,085.16/655,682.74 = 291,291.21/x
  3. Step 3: Cross multiply
    475,085.16x = 655,682.74 × 291,291.21
  4. Step 4: Simplify right side
    475,085.16x = 190,994,618,710.72
  5. Step 5: Solve for x
    x = 190,994,618,710.72/475,085.16
  6. Step 6: Final answer
    x = 402,021.86

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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.