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Finding the Fourth Proportional to 358,729.49, 538,020.79 and 134,048.45

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Solution

The fourth proportional to 358,729.49, 538,020.79 and 134,048.45 is: 201,045.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,729.49 : 538,020.79 = 134,048.45 : x
  2. Step 2: Convert to fraction form
    358,729.49/538,020.79 = 134,048.45/x
  3. Step 3: Cross multiply
    358,729.49x = 538,020.79 × 134,048.45
  4. Step 4: Simplify right side
    358,729.49x = 72,120,852,967.28
  5. Step 5: Solve for x
    x = 72,120,852,967.28/358,729.49
  6. Step 6: Final answer
    x = 201,045.23

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1.5x scale

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.