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Finding the Fourth Proportional to 427,412.21, 589,860.84 and 243,655.16

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Solution

The fourth proportional to 427,412.21, 589,860.84 and 243,655.16 is: 336,262.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,412.21 : 589,860.84 = 243,655.16 : x
  2. Step 2: Convert to fraction form
    427,412.21/589,860.84 = 243,655.16/x
  3. Step 3: Cross multiply
    427,412.21x = 589,860.84 × 243,655.16
  4. Step 4: Simplify right side
    427,412.21x = 143,722,637,347.93
  5. Step 5: Solve for x
    x = 143,722,637,347.93/427,412.21
  6. Step 6: Final answer
    x = 336,262.36

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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.