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Finding the Fourth Proportional to 348,095.80, 521,106.90 and 207,782.20

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Solution

The fourth proportional to 348,095.80, 521,106.90 and 207,782.20 is: 311,054.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,095.80 : 521,106.90 = 207,782.20 : x
  2. Step 2: Convert to fraction form
    348,095.80/521,106.90 = 207,782.20/x
  3. Step 3: Cross multiply
    348,095.80x = 521,106.90 × 207,782.20
  4. Step 4: Simplify right side
    348,095.80x = 108,276,738,117.18
  5. Step 5: Solve for x
    x = 108,276,738,117.18/348,095.80
  6. Step 6: Final answer
    x = 311,054.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.