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Finding the Fourth Proportional to 430,538.58, 645,486.17 and 297,037.89

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Solution

The fourth proportional to 430,538.58, 645,486.17 and 297,037.89 is: 445,334.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,538.58 : 645,486.17 = 297,037.89 : x
  2. Step 2: Convert to fraction form
    430,538.58/645,486.17 = 297,037.89/x
  3. Step 3: Cross multiply
    430,538.58x = 645,486.17 × 297,037.89
  4. Step 4: Simplify right side
    430,538.58x = 191,733,848,475.79
  5. Step 5: Solve for x
    x = 191,733,848,475.79/430,538.58
  6. Step 6: Final answer
    x = 445,334.88

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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.