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Finding the Fourth Proportional to 306,519.66, 423,055.53 and 191,851.74

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Solution

The fourth proportional to 306,519.66, 423,055.53 and 191,851.74 is: 264,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,519.66 : 423,055.53 = 191,851.74 : x
  2. Step 2: Convert to fraction form
    306,519.66/423,055.53 = 191,851.74/x
  3. Step 3: Cross multiply
    306,519.66x = 423,055.53 × 191,851.74
  4. Step 4: Simplify right side
    306,519.66x = 81,163,939,547.12
  5. Step 5: Solve for x
    x = 81,163,939,547.12/306,519.66
  6. Step 6: Final answer
    x = 264,791.95

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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.