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Finding the Fourth Proportional to 210,384.82, 315,580.02 and 70,143.49

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Solution

The fourth proportional to 210,384.82, 315,580.02 and 70,143.49 is: 105,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,384.82 : 315,580.02 = 70,143.49 : x
  2. Step 2: Convert to fraction form
    210,384.82/315,580.02 = 70,143.49/x
  3. Step 3: Cross multiply
    210,384.82x = 315,580.02 × 70,143.49
  4. Step 4: Simplify right side
    210,384.82x = 22,135,883,977.07
  5. Step 5: Solve for x
    x = 22,135,883,977.07/210,384.82
  6. Step 6: Final answer
    x = 105,216.17

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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.