Home / 212,870,231.40-319,305,347.10-76,537,900.20

Finding the Fourth Proportional to 212,870,231.40, 319,305,347.10 and 76,537,900.20

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Solution

The fourth proportional to 212,870,231.40, 319,305,347.10 and 76,537,900.20 is: 114,806,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,870,231.40 : 319,305,347.10 = 76,537,900.20 : x
  2. Step 2: Convert to fraction form
    212,870,231.40/319,305,347.10 = 76,537,900.20/x
  3. Step 3: Cross multiply
    212,870,231.40x = 319,305,347.10 × 76,537,900.20
  4. Step 4: Simplify right side
    212,870,231.40x = 24,438,960,789,666,164
  5. Step 5: Solve for x
    x = 24,438,960,789,666,164/212,870,231.40
  6. Step 6: Final answer
    x = 114,806,850.30

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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.