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Finding the Fourth Proportional to 511,080.13, 705,281.07 and 281,658.67

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Solution

The fourth proportional to 511,080.13, 705,281.07 and 281,658.67 is: 388,683.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,080.13 : 705,281.07 = 281,658.67 : x
  2. Step 2: Convert to fraction form
    511,080.13/705,281.07 = 281,658.67/x
  3. Step 3: Cross multiply
    511,080.13x = 705,281.07 × 281,658.67
  4. Step 4: Simplify right side
    511,080.13x = 198,648,527,445.39
  5. Step 5: Solve for x
    x = 198,648,527,445.39/511,080.13
  6. Step 6: Final answer
    x = 388,683.72

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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.