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Finding the Fourth Proportional to 388,422.68, 536,102.70 and 245,086.16

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Solution

The fourth proportional to 388,422.68, 536,102.70 and 245,086.16 is: 338,269.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,422.68 : 536,102.70 = 245,086.16 : x
  2. Step 2: Convert to fraction form
    388,422.68/536,102.70 = 245,086.16/x
  3. Step 3: Cross multiply
    388,422.68x = 536,102.70 × 245,086.16
  4. Step 4: Simplify right side
    388,422.68x = 131,391,352,108.63
  5. Step 5: Solve for x
    x = 131,391,352,108.63/388,422.68
  6. Step 6: Final answer
    x = 338,269.00

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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.