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Finding the Fourth Proportional to 403,645.01, 557,032.95 and 231,570.50

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Solution

The fourth proportional to 403,645.01, 557,032.95 and 231,570.50 is: 319,568.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,645.01 : 557,032.95 = 231,570.50 : x
  2. Step 2: Convert to fraction form
    403,645.01/557,032.95 = 231,570.50/x
  3. Step 3: Cross multiply
    403,645.01x = 557,032.95 × 231,570.50
  4. Step 4: Simplify right side
    403,645.01x = 128,992,395,962.81
  5. Step 5: Solve for x
    x = 128,992,395,962.81/403,645.01
  6. Step 6: Final answer
    x = 319,568.91

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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.