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Finding the Fourth Proportional to 209,345.94, 313,995.78 and 57,554.88

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Solution

The fourth proportional to 209,345.94, 313,995.78 and 57,554.88 is: 86,325.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,345.94 : 313,995.78 = 57,554.88 : x
  2. Step 2: Convert to fraction form
    209,345.94/313,995.78 = 57,554.88/x
  3. Step 3: Cross multiply
    209,345.94x = 313,995.78 × 57,554.88
  4. Step 4: Simplify right side
    209,345.94x = 18,071,989,438.41
  5. Step 5: Solve for x
    x = 18,071,989,438.41/209,345.94
  6. Step 6: Final answer
    x = 86,325.96

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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.