Home / 212,895,427.40-319,343,141.10-191,396,342.60

Finding the Fourth Proportional to 212,895,427.40, 319,343,141.10 and 191,396,342.60

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Solution

The fourth proportional to 212,895,427.40, 319,343,141.10 and 191,396,342.60 is: 287,094,513.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,895,427.40 : 319,343,141.10 = 191,396,342.60 : x
  2. Step 2: Convert to fraction form
    212,895,427.40/319,343,141.10 = 191,396,342.60/x
  3. Step 3: Cross multiply
    212,895,427.40x = 319,343,141.10 × 191,396,342.60
  4. Step 4: Simplify right side
    212,895,427.40x = 61,121,109,240,935,744
  5. Step 5: Solve for x
    x = 61,121,109,240,935,744/212,895,427.40
  6. Step 6: Final answer
    x = 287,094,513.90

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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.