Home / 212,478.48-318,741.07-70,271.95

Finding the Fourth Proportional to 212,478.48, 318,741.07 and 70,271.95

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Solution

The fourth proportional to 212,478.48, 318,741.07 and 70,271.95 is: 105,415.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,478.48 : 318,741.07 = 70,271.95 : x
  2. Step 2: Convert to fraction form
    212,478.48/318,741.07 = 70,271.95/x
  3. Step 3: Cross multiply
    212,478.48x = 318,741.07 × 70,271.95
  4. Step 4: Simplify right side
    212,478.48x = 22,398,556,533.99
  5. Step 5: Solve for x
    x = 22,398,556,533.99/212,478.48
  6. Step 6: Final answer
    x = 105,415.65

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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.