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Finding the Fourth Proportional to 279,210.29, 384,337.44 and 243,338.63

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Solution

The fourth proportional to 279,210.29, 384,337.44 and 243,338.63 is: 334,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,210.29 : 384,337.44 = 243,338.63 : x
  2. Step 2: Convert to fraction form
    279,210.29/384,337.44 = 243,338.63/x
  3. Step 3: Cross multiply
    279,210.29x = 384,337.44 × 243,338.63
  4. Step 4: Simplify right side
    279,210.29x = 93,524,144,185.62
  5. Step 5: Solve for x
    x = 93,524,144,185.62/279,210.29
  6. Step 6: Final answer
    x = 334,959.52

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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.