Home / 212,895,425.40-319,343,138.10-191,396,340.60

Finding the Fourth Proportional to 212,895,425.40, 319,343,138.10 and 191,396,340.60

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Solution

The fourth proportional to 212,895,425.40, 319,343,138.10 and 191,396,340.60 is: 287,094,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,895,425.40 : 319,343,138.10 = 191,396,340.60 : x
  2. Step 2: Convert to fraction form
    212,895,425.40/319,343,138.10 = 191,396,340.60/x
  3. Step 3: Cross multiply
    212,895,425.40x = 319,343,138.10 × 191,396,340.60
  4. Step 4: Simplify right side
    212,895,425.40x = 61,121,108,028,060,440
  5. Step 5: Solve for x
    x = 61,121,108,028,060,440/212,895,425.40
  6. Step 6: Final answer
    x = 287,094,510.90

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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.