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Finding the Fourth Proportional to 358,728.49, 538,019.29 and 134,047.45

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Solution

The fourth proportional to 358,728.49, 538,019.29 and 134,047.45 is: 201,043.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,728.49 : 538,019.29 = 134,047.45 : x
  2. Step 2: Convert to fraction form
    358,728.49/538,019.29 = 134,047.45/x
  3. Step 3: Cross multiply
    358,728.49x = 538,019.29 × 134,047.45
  4. Step 4: Simplify right side
    358,728.49x = 72,120,113,875.31
  5. Step 5: Solve for x
    x = 72,120,113,875.31/358,728.49
  6. Step 6: Final answer
    x = 201,043.73

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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.