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Finding the Fourth Proportional to 210,620.02, 315,946.36 and 70,379.14

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Solution

The fourth proportional to 210,620.02, 315,946.36 and 70,379.14 is: 105,574.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,620.02 : 315,946.36 = 70,379.14 : x
  2. Step 2: Convert to fraction form
    210,620.02/315,946.36 = 70,379.14/x
  3. Step 3: Cross multiply
    210,620.02x = 315,946.36 × 70,379.14
  4. Step 4: Simplify right side
    210,620.02x = 22,236,033,102.93
  5. Step 5: Solve for x
    x = 22,236,033,102.93/210,620.02
  6. Step 6: Final answer
    x = 105,574.17

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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.