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Finding the Fourth Proportional to 371,247.80, 556,871.70 and 309,039.80

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Solution

The fourth proportional to 371,247.80, 556,871.70 and 309,039.80 is: 463,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,247.80 : 556,871.70 = 309,039.80 : x
  2. Step 2: Convert to fraction form
    371,247.80/556,871.70 = 309,039.80/x
  3. Step 3: Cross multiply
    371,247.80x = 556,871.70 × 309,039.80
  4. Step 4: Simplify right side
    371,247.80x = 172,095,518,793.66
  5. Step 5: Solve for x
    x = 172,095,518,793.66/371,247.80
  6. Step 6: Final answer
    x = 463,559.70

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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.