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Finding the Fourth Proportional to 355,047.05, 532,552.55 and 130,390.31

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Solution

The fourth proportional to 355,047.05, 532,552.55 and 130,390.31 is: 195,578.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,047.05 : 532,552.55 = 130,390.31 : x
  2. Step 2: Convert to fraction form
    355,047.05/532,552.55 = 130,390.31/x
  3. Step 3: Cross multiply
    355,047.05x = 532,552.55 × 130,390.31
  4. Step 4: Simplify right side
    355,047.05x = 69,439,688,771.08
  5. Step 5: Solve for x
    x = 69,439,688,771.08/355,047.05
  6. Step 6: Final answer
    x = 195,578.84

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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.