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Finding the Fourth Proportional to 419,492.79, 578,879.53 and 238,200.85

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Solution

The fourth proportional to 419,492.79, 578,879.53 and 238,200.85 is: 328,705.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,492.79 : 578,879.53 = 238,200.85 : x
  2. Step 2: Convert to fraction form
    419,492.79/578,879.53 = 238,200.85/x
  3. Step 3: Cross multiply
    419,492.79x = 578,879.53 × 238,200.85
  4. Step 4: Simplify right side
    419,492.79x = 137,889,596,221.70
  5. Step 5: Solve for x
    x = 137,889,596,221.70/419,492.79
  6. Step 6: Final answer
    x = 328,705.52

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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.