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Finding the Fourth Proportional to 210,437.38, 315,672.54 and 70,195.87

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Solution

The fourth proportional to 210,437.38, 315,672.54 and 70,195.87 is: 105,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,437.38 : 315,672.54 = 70,195.87 : x
  2. Step 2: Convert to fraction form
    210,437.38/315,672.54 = 70,195.87/x
  3. Step 3: Cross multiply
    210,437.38x = 315,672.54 × 70,195.87
  4. Step 4: Simplify right side
    210,437.38x = 22,158,908,580.41
  5. Step 5: Solve for x
    x = 22,158,908,580.41/210,437.38
  6. Step 6: Final answer
    x = 105,299.30

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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.