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Finding the Fourth Proportional to 419,501.99, 578,885.46 and 247,380.47

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Solution

The fourth proportional to 419,501.99, 578,885.46 and 247,380.47 is: 341,368.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,501.99 : 578,885.46 = 247,380.47 : x
  2. Step 2: Convert to fraction form
    419,501.99/578,885.46 = 247,380.47/x
  3. Step 3: Cross multiply
    419,501.99x = 578,885.46 × 247,380.47
  4. Step 4: Simplify right side
    419,501.99x = 143,204,959,064.64
  5. Step 5: Solve for x
    x = 143,204,959,064.64/419,501.99
  6. Step 6: Final answer
    x = 341,368.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.