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Finding the Fourth Proportional to 346,803.22, 478,565.31 and 195,890.50

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Solution

The fourth proportional to 346,803.22, 478,565.31 and 195,890.50 is: 270,315.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,803.22 : 478,565.31 = 195,890.50 : x
  2. Step 2: Convert to fraction form
    346,803.22/478,565.31 = 195,890.50/x
  3. Step 3: Cross multiply
    346,803.22x = 478,565.31 × 195,890.50
  4. Step 4: Simplify right side
    346,803.22x = 93,746,397,858.56
  5. Step 5: Solve for x
    x = 93,746,397,858.56/346,803.22
  6. Step 6: Final answer
    x = 270,315.82

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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.