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Finding the Fourth Proportional to 370,626.48, 511,484.76 and 209,488.56

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Solution

The fourth proportional to 370,626.48, 511,484.76 and 209,488.56 is: 289,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,626.48 : 511,484.76 = 209,488.56 : x
  2. Step 2: Convert to fraction form
    370,626.48/511,484.76 = 209,488.56/x
  3. Step 3: Cross multiply
    370,626.48x = 511,484.76 × 209,488.56
  4. Step 4: Simplify right side
    370,626.48x = 107,150,205,834.35
  5. Step 5: Solve for x
    x = 107,150,205,834.35/370,626.48
  6. Step 6: Final answer
    x = 289,105.64

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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.