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Finding the Fourth Proportional to 371,329.80, 556,994.70 and 347,710.20

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Solution

The fourth proportional to 371,329.80, 556,994.70 and 347,710.20 is: 521,565.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,329.80 : 556,994.70 = 347,710.20 : x
  2. Step 2: Convert to fraction form
    371,329.80/556,994.70 = 347,710.20/x
  3. Step 3: Cross multiply
    371,329.80x = 556,994.70 × 347,710.20
  4. Step 4: Simplify right side
    371,329.80x = 193,672,738,535.94
  5. Step 5: Solve for x
    x = 193,672,738,535.94/371,329.80
  6. Step 6: Final answer
    x = 521,565.30

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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.