Home / 423,730.20-635,012.10-281,170.20

Finding the Fourth Proportional to 423,730.20, 635,012.10 and 281,170.20

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Solution

The fourth proportional to 423,730.20, 635,012.10 and 281,170.20 is: 421,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,730.20 : 635,012.10 = 281,170.20 : x
  2. Step 2: Convert to fraction form
    423,730.20/635,012.10 = 281,170.20/x
  3. Step 3: Cross multiply
    423,730.20x = 635,012.10 × 281,170.20
  4. Step 4: Simplify right side
    423,730.20x = 178,546,479,159.42
  5. Step 5: Solve for x
    x = 178,546,479,159.42/423,730.20
  6. Step 6: Final answer
    x = 421,368.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.