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Finding the Fourth Proportional to 477,329.40, 715,977.90 and 122,346.90

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Solution

The fourth proportional to 477,329.40, 715,977.90 and 122,346.90 is: 183,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,329.40 : 715,977.90 = 122,346.90 : x
  2. Step 2: Convert to fraction form
    477,329.40/715,977.90 = 122,346.90/x
  3. Step 3: Cross multiply
    477,329.40x = 715,977.90 × 122,346.90
  4. Step 4: Simplify right side
    477,329.40x = 87,597,676,533.51
  5. Step 5: Solve for x
    x = 87,597,676,533.51/477,329.40
  6. Step 6: Final answer
    x = 183,516.20

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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.