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Finding the Fourth Proportional to 509,977.95, 765,133.35 and 243,759.21

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Solution

The fourth proportional to 509,977.95, 765,133.35 and 243,759.21 is: 365,718.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,977.95 : 765,133.35 = 243,759.21 : x
  2. Step 2: Convert to fraction form
    509,977.95/765,133.35 = 243,759.21/x
  3. Step 3: Cross multiply
    509,977.95x = 765,133.35 × 243,759.21
  4. Step 4: Simplify right side
    509,977.95x = 186,508,300,940.65
  5. Step 5: Solve for x
    x = 186,508,300,940.65/509,977.95
  6. Step 6: Final answer
    x = 365,718.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.