Home / 320,828,187.12-480,413,471.53-221,424,557.43

Finding the Fourth Proportional to 320,828,187.12, 480,413,471.53 and 221,424,557.43

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Solution

The fourth proportional to 320,828,187.12, 480,413,471.53 and 221,424,557.43 is: 331,564,820.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,828,187.12 : 480,413,471.53 = 221,424,557.43 : x
  2. Step 2: Convert to fraction form
    320,828,187.12/480,413,471.53 = 221,424,557.43/x
  3. Step 3: Cross multiply
    320,828,187.12x = 480,413,471.53 × 221,424,557.43
  4. Step 4: Simplify right side
    320,828,187.12x = 106,375,340,316,386,592
  5. Step 5: Solve for x
    x = 106,375,340,316,386,592/320,828,187.12
  6. Step 6: Final answer
    x = 331,564,820.63

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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.