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Finding the Fourth Proportional to 316,655.54, 436,985.30 and 171,462.90

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Solution

The fourth proportional to 316,655.54, 436,985.30 and 171,462.90 is: 236,619.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,655.54 : 436,985.30 = 171,462.90 : x
  2. Step 2: Convert to fraction form
    316,655.54/436,985.30 = 171,462.90/x
  3. Step 3: Cross multiply
    316,655.54x = 436,985.30 × 171,462.90
  4. Step 4: Simplify right side
    316,655.54x = 74,926,767,224.03
  5. Step 5: Solve for x
    x = 74,926,767,224.03/316,655.54
  6. Step 6: Final answer
    x = 236,619.16

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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.