Home / 370,653.98-511,511.36-209,509.67

Finding the Fourth Proportional to 370,653.98, 511,511.36 and 209,509.67

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Solution

The fourth proportional to 370,653.98, 511,511.36 and 209,509.67 is: 289,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,653.98 : 511,511.36 = 209,509.67 : x
  2. Step 2: Convert to fraction form
    370,653.98/511,511.36 = 209,509.67/x
  3. Step 3: Cross multiply
    370,653.98x = 511,511.36 × 209,509.67
  4. Step 4: Simplify right side
    370,653.98x = 107,166,576,466.08
  5. Step 5: Solve for x
    x = 107,166,576,466.08/370,653.98
  6. Step 6: Final answer
    x = 289,128.36

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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.