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Finding the Fourth Proportional to 356,307.72, 491,711.73 and 195,162.81

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Solution

The fourth proportional to 356,307.72, 491,711.73 and 195,162.81 is: 269,328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,307.72 : 491,711.73 = 195,162.81 : x
  2. Step 2: Convert to fraction form
    356,307.72/491,711.73 = 195,162.81/x
  3. Step 3: Cross multiply
    356,307.72x = 491,711.73 × 195,162.81
  4. Step 4: Simplify right side
    356,307.72x = 95,963,842,936.76
  5. Step 5: Solve for x
    x = 95,963,842,936.76/356,307.72
  6. Step 6: Final answer
    x = 269,328.55

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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.