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Finding the Fourth Proportional to 388,852.40, 536,616.20 and 210,004.40

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Solution

The fourth proportional to 388,852.40, 536,616.20 and 210,004.40 is: 289,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,852.40 : 536,616.20 = 210,004.40 : x
  2. Step 2: Convert to fraction form
    388,852.40/536,616.20 = 210,004.40/x
  3. Step 3: Cross multiply
    388,852.40x = 536,616.20 × 210,004.40
  4. Step 4: Simplify right side
    388,852.40x = 112,691,763,111.28
  5. Step 5: Solve for x
    x = 112,691,763,111.28/388,852.40
  6. Step 6: Final answer
    x = 289,806.01

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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.