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Finding the Fourth Proportional to 388,541.60, 536,175.56 and 216,459.48

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Solution

The fourth proportional to 388,541.60, 536,175.56 and 216,459.48 is: 298,707.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,541.60 : 536,175.56 = 216,459.48 : x
  2. Step 2: Convert to fraction form
    388,541.60/536,175.56 = 216,459.48/x
  3. Step 3: Cross multiply
    388,541.60x = 536,175.56 × 216,459.48
  4. Step 4: Simplify right side
    388,541.60x = 116,060,282,906.31
  5. Step 5: Solve for x
    x = 116,060,282,906.31/388,541.60
  6. Step 6: Final answer
    x = 298,707.48

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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.