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Finding the Fourth Proportional to 545,695.13, 818,536.93 and 213,268.25

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Solution

The fourth proportional to 545,695.13, 818,536.93 and 213,268.25 is: 319,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,695.13 : 818,536.93 = 213,268.25 : x
  2. Step 2: Convert to fraction form
    545,695.13/818,536.93 = 213,268.25/x
  3. Step 3: Cross multiply
    545,695.13x = 818,536.93 × 213,268.25
  4. Step 4: Simplify right side
    545,695.13x = 174,567,938,621.47
  5. Step 5: Solve for x
    x = 174,567,938,621.47/545,695.13
  6. Step 6: Final answer
    x = 319,900.12

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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.