Home / 378,157,622.76-521,856,470.61-210,894,041.61

Finding the Fourth Proportional to 378,157,622.76, 521,856,470.61 and 210,894,041.61

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Solution

The fourth proportional to 378,157,622.76, 521,856,470.61 and 210,894,041.61 is: 291,033,192.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,157,622.76 : 521,856,470.61 = 210,894,041.61 : x
  2. Step 2: Convert to fraction form
    378,157,622.76/521,856,470.61 = 210,894,041.61/x
  3. Step 3: Cross multiply
    378,157,622.76x = 521,856,470.61 × 210,894,041.61
  4. Step 4: Simplify right side
    378,157,622.76x = 110,056,420,227,273,088
  5. Step 5: Solve for x
    x = 110,056,420,227,273,088/378,157,622.76
  6. Step 6: Final answer
    x = 291,033,192.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.