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Finding the Fourth Proportional to 358,740.28, 538,107.54 and 134,157.40

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Solution

The fourth proportional to 358,740.28, 538,107.54 and 134,157.40 is: 201,235.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,740.28 : 538,107.54 = 134,157.40 : x
  2. Step 2: Convert to fraction form
    358,740.28/538,107.54 = 134,157.40/x
  3. Step 3: Cross multiply
    358,740.28x = 538,107.54 × 134,157.40
  4. Step 4: Simplify right side
    358,740.28x = 72,191,108,486.80
  5. Step 5: Solve for x
    x = 72,191,108,486.80/358,740.28
  6. Step 6: Final answer
    x = 201,235.02

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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.