Home / 210,478.18-315,719.97-70,236.82

Finding the Fourth Proportional to 210,478.18, 315,719.97 and 70,236.82

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Solution

The fourth proportional to 210,478.18, 315,719.97 and 70,236.82 is: 105,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,478.18 : 315,719.97 = 70,236.82 : x
  2. Step 2: Convert to fraction form
    210,478.18/315,719.97 = 70,236.82/x
  3. Step 3: Cross multiply
    210,478.18x = 315,719.97 × 70,236.82
  4. Step 4: Simplify right side
    210,478.18x = 22,175,166,703.30
  5. Step 5: Solve for x
    x = 22,175,166,703.30/210,478.18
  6. Step 6: Final answer
    x = 105,356.13

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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.