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Finding the Fourth Proportional to 388,718.06, 536,410.23 and 218,941.25

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Solution

The fourth proportional to 388,718.06, 536,410.23 and 218,941.25 is: 302,127.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,718.06 : 536,410.23 = 218,941.25 : x
  2. Step 2: Convert to fraction form
    388,718.06/536,410.23 = 218,941.25/x
  3. Step 3: Cross multiply
    388,718.06x = 536,410.23 × 218,941.25
  4. Step 4: Simplify right side
    388,718.06x = 117,442,326,268.99
  5. Step 5: Solve for x
    x = 117,442,326,268.99/388,718.06
  6. Step 6: Final answer
    x = 302,127.27

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1.5x scale

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.