Home / 210,438.38-315,674.04-70,196.87

Finding the Fourth Proportional to 210,438.38, 315,674.04 and 70,196.87

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Solution

The fourth proportional to 210,438.38, 315,674.04 and 70,196.87 is: 105,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,438.38 : 315,674.04 = 70,196.87 : x
  2. Step 2: Convert to fraction form
    210,438.38/315,674.04 = 70,196.87/x
  3. Step 3: Cross multiply
    210,438.38x = 315,674.04 × 70,196.87
  4. Step 4: Simplify right side
    210,438.38x = 22,159,329,548.25
  5. Step 5: Solve for x
    x = 22,159,329,548.25/210,438.38
  6. Step 6: Final answer
    x = 105,300.80

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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.