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Finding the Fourth Proportional to 431,643.23, 595,868.22 and 307,544.21

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Solution

The fourth proportional to 431,643.23, 595,868.22 and 307,544.21 is: 424,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,643.23 : 595,868.22 = 307,544.21 : x
  2. Step 2: Convert to fraction form
    431,643.23/595,868.22 = 307,544.21/x
  3. Step 3: Cross multiply
    431,643.23x = 595,868.22 × 307,544.21
  4. Step 4: Simplify right side
    431,643.23x = 183,255,818,004.67
  5. Step 5: Solve for x
    x = 183,255,818,004.67/431,643.23
  6. Step 6: Final answer
    x = 424,553.91

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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.