Home / 256,608,266.70-384,912,400.05-213,526,116.30

Finding the Fourth Proportional to 256,608,266.70, 384,912,400.05 and 213,526,116.30

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Solution

The fourth proportional to 256,608,266.70, 384,912,400.05 and 213,526,116.30 is: 320,289,174.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,608,266.70 : 384,912,400.05 = 213,526,116.30 : x
  2. Step 2: Convert to fraction form
    256,608,266.70/384,912,400.05 = 213,526,116.30/x
  3. Step 3: Cross multiply
    256,608,266.70x = 384,912,400.05 × 213,526,116.30
  4. Step 4: Simplify right side
    256,608,266.70x = 82,188,849,898,388,432
  5. Step 5: Solve for x
    x = 82,188,849,898,388,432/256,608,266.70
  6. Step 6: Final answer
    x = 320,289,174.45

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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.