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Finding the Fourth Proportional to 371,151.09, 556,721.73 and 90,670.77

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Solution

The fourth proportional to 371,151.09, 556,721.73 and 90,670.77 is: 136,004.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,151.09 : 556,721.73 = 90,670.77 : x
  2. Step 2: Convert to fraction form
    371,151.09/556,721.73 = 90,670.77/x
  3. Step 3: Cross multiply
    371,151.09x = 556,721.73 × 90,670.77
  4. Step 4: Simplify right side
    371,151.09x = 50,478,387,934.83
  5. Step 5: Solve for x
    x = 50,478,387,934.83/371,151.09
  6. Step 6: Final answer
    x = 136,004.96

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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.