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Finding the Fourth Proportional to 210,383.31, 315,591.47 and 70,141.94

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Solution

The fourth proportional to 210,383.31, 315,591.47 and 70,141.94 is: 105,218.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,383.31 : 315,591.47 = 70,141.94 : x
  2. Step 2: Convert to fraction form
    210,383.31/315,591.47 = 70,141.94/x
  3. Step 3: Cross multiply
    210,383.31x = 315,591.47 × 70,141.94
  4. Step 4: Simplify right side
    210,383.31x = 22,136,197,953.25
  5. Step 5: Solve for x
    x = 22,136,197,953.25/210,383.31
  6. Step 6: Final answer
    x = 105,218.41

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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.