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Finding the Fourth Proportional to 210,351.52, 315,565.68 and 70,096.80

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Solution

The fourth proportional to 210,351.52, 315,565.68 and 70,096.80 is: 105,158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,351.52 : 315,565.68 = 70,096.80 : x
  2. Step 2: Convert to fraction form
    210,351.52/315,565.68 = 70,096.80/x
  3. Step 3: Cross multiply
    210,351.52x = 315,565.68 × 70,096.80
  4. Step 4: Simplify right side
    210,351.52x = 22,120,144,357.82
  5. Step 5: Solve for x
    x = 22,120,144,357.82/210,351.52
  6. Step 6: Final answer
    x = 105,158.00

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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.