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Finding the Fourth Proportional to 305,482.16, 421,714.68 and 273,522.80

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Solution

The fourth proportional to 305,482.16, 421,714.68 and 273,522.80 is: 377,595.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,482.16 : 421,714.68 = 273,522.80 : x
  2. Step 2: Convert to fraction form
    305,482.16/421,714.68 = 273,522.80/x
  3. Step 3: Cross multiply
    305,482.16x = 421,714.68 × 273,522.80
  4. Step 4: Simplify right side
    305,482.16x = 115,348,580,074.70
  5. Step 5: Solve for x
    x = 115,348,580,074.70/305,482.16
  6. Step 6: Final answer
    x = 377,595.14

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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.