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Finding the Fourth Proportional to 306,475.66, 423,144.78 and 191,800.76

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Solution

The fourth proportional to 306,475.66, 423,144.78 and 191,800.76 is: 264,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,475.66 : 423,144.78 = 191,800.76 : x
  2. Step 2: Convert to fraction form
    306,475.66/423,144.78 = 191,800.76/x
  3. Step 3: Cross multiply
    306,475.66x = 423,144.78 × 191,800.76
  4. Step 4: Simplify right side
    306,475.66x = 81,159,490,394.03
  5. Step 5: Solve for x
    x = 81,159,490,394.03/306,475.66
  6. Step 6: Final answer
    x = 264,815.45

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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.