Home / 420,069.86-579,730.84-238,838.66

Finding the Fourth Proportional to 420,069.86, 579,730.84 and 238,838.66

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Solution

The fourth proportional to 420,069.86, 579,730.84 and 238,838.66 is: 329,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,069.86 : 579,730.84 = 238,838.66 : x
  2. Step 2: Convert to fraction form
    420,069.86/579,730.84 = 238,838.66/x
  3. Step 3: Cross multiply
    420,069.86x = 579,730.84 × 238,838.66
  4. Step 4: Simplify right side
    420,069.86x = 138,462,136,986.27
  5. Step 5: Solve for x
    x = 138,462,136,986.27/420,069.86
  6. Step 6: Final answer
    x = 329,616.93

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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.