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Finding the Fourth Proportional to 477,340.40, 715,994.40 and 122,357.90

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Solution

The fourth proportional to 477,340.40, 715,994.40 and 122,357.90 is: 183,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,340.40 : 715,994.40 = 122,357.90 : x
  2. Step 2: Convert to fraction form
    477,340.40/715,994.40 = 122,357.90/x
  3. Step 3: Cross multiply
    477,340.40x = 715,994.40 × 122,357.90
  4. Step 4: Simplify right side
    477,340.40x = 87,607,571,195.76
  5. Step 5: Solve for x
    x = 87,607,571,195.76/477,340.40
  6. Step 6: Final answer
    x = 183,532.70

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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.