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Finding the Fourth Proportional to 419,655.48, 579,106.46 and 238,366.86

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Solution

The fourth proportional to 419,655.48, 579,106.46 and 238,366.86 is: 328,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,655.48 : 579,106.46 = 238,366.86 : x
  2. Step 2: Convert to fraction form
    419,655.48/579,106.46 = 238,366.86/x
  3. Step 3: Cross multiply
    419,655.48x = 579,106.46 × 238,366.86
  4. Step 4: Simplify right side
    419,655.48x = 138,039,788,475.92
  5. Step 5: Solve for x
    x = 138,039,788,475.92/419,655.48
  6. Step 6: Final answer
    x = 328,935.98

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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.