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Finding the Fourth Proportional to 370,847.62, 511,779.77 and 209,726.76

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Solution

The fourth proportional to 370,847.62, 511,779.77 and 209,726.76 is: 289,428.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,847.62 : 511,779.77 = 209,726.76 : x
  2. Step 2: Convert to fraction form
    370,847.62/511,779.77 = 209,726.76/x
  3. Step 3: Cross multiply
    370,847.62x = 511,779.77 × 209,726.76
  4. Step 4: Simplify right side
    370,847.62x = 107,333,912,429.30
  5. Step 5: Solve for x
    x = 107,333,912,429.30/370,847.62
  6. Step 6: Final answer
    x = 289,428.62

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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.