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Finding the Fourth Proportional to 285,877.50, 428,816.25 and 195,831.42

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Solution

The fourth proportional to 285,877.50, 428,816.25 and 195,831.42 is: 293,747.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,877.50 : 428,816.25 = 195,831.42 : x
  2. Step 2: Convert to fraction form
    285,877.50/428,816.25 = 195,831.42/x
  3. Step 3: Cross multiply
    285,877.50x = 428,816.25 × 195,831.42
  4. Step 4: Simplify right side
    285,877.50x = 83,975,695,156.58
  5. Step 5: Solve for x
    x = 83,975,695,156.58/285,877.50
  6. Step 6: Final answer
    x = 293,747.13

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1.5x scale

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.