Home / 319,221.45-440,547.47-195,095.78

Finding the Fourth Proportional to 319,221.45, 440,547.47 and 195,095.78

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Solution

The fourth proportional to 319,221.45, 440,547.47 and 195,095.78 is: 269,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,221.45 : 440,547.47 = 195,095.78 : x
  2. Step 2: Convert to fraction form
    319,221.45/440,547.47 = 195,095.78/x
  3. Step 3: Cross multiply
    319,221.45x = 440,547.47 × 195,095.78
  4. Step 4: Simplify right side
    319,221.45x = 85,948,949,108.46
  5. Step 5: Solve for x
    x = 85,948,949,108.46/319,221.45
  6. Step 6: Final answer
    x = 269,245.53

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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.