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Finding the Fourth Proportional to 291,675.78, 437,513.70 and 70,059.78

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Solution

The fourth proportional to 291,675.78, 437,513.70 and 70,059.78 is: 105,089.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,675.78 : 437,513.70 = 70,059.78 : x
  2. Step 2: Convert to fraction form
    291,675.78/437,513.70 = 70,059.78/x
  3. Step 3: Cross multiply
    291,675.78x = 437,513.70 × 70,059.78
  4. Step 4: Simplify right side
    291,675.78x = 30,652,113,568.99
  5. Step 5: Solve for x
    x = 30,652,113,568.99/291,675.78
  6. Step 6: Final answer
    x = 105,089.68

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1.5x scale

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.