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Finding the Fourth Proportional to 370,851.55, 511,785.21 and 209,730.67

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Solution

The fourth proportional to 370,851.55, 511,785.21 and 209,730.67 is: 289,434.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,851.55 : 511,785.21 = 209,730.67 : x
  2. Step 2: Convert to fraction form
    370,851.55/511,785.21 = 209,730.67/x
  3. Step 3: Cross multiply
    370,851.55x = 511,785.21 × 209,730.67
  4. Step 4: Simplify right side
    370,851.55x = 107,337,054,989.39
  5. Step 5: Solve for x
    x = 107,337,054,989.39/370,851.55
  6. Step 6: Final answer
    x = 289,434.02

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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.