Home / 210,440.40-315,677.04-70,198.88

Finding the Fourth Proportional to 210,440.40, 315,677.04 and 70,198.88

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Solution

The fourth proportional to 210,440.40, 315,677.04 and 70,198.88 is: 105,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,440.40 : 315,677.04 = 70,198.88 : x
  2. Step 2: Convert to fraction form
    210,440.40/315,677.04 = 70,198.88/x
  3. Step 3: Cross multiply
    210,440.40x = 315,677.04 × 70,198.88
  4. Step 4: Simplify right side
    210,440.40x = 22,160,174,649.72
  5. Step 5: Solve for x
    x = 22,160,174,649.72/210,440.40
  6. Step 6: Final answer
    x = 105,303.80

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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.