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Finding the Fourth Proportional to 423,712.88, 635,574.50 and 124,199.51

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Solution

The fourth proportional to 423,712.88, 635,574.50 and 124,199.51 is: 186,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,712.88 : 635,574.50 = 124,199.51 : x
  2. Step 2: Convert to fraction form
    423,712.88/635,574.50 = 124,199.51/x
  3. Step 3: Cross multiply
    423,712.88x = 635,574.50 × 124,199.51
  4. Step 4: Simplify right side
    423,712.88x = 78,938,037,669.63
  5. Step 5: Solve for x
    x = 78,938,037,669.63/423,712.88
  6. Step 6: Final answer
    x = 186,300.78

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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.