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Finding the Fourth Proportional to 638,912.88, 958,368.36 and 165,598.68

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Solution

The fourth proportional to 638,912.88, 958,368.36 and 165,598.68 is: 248,397.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,912.88 : 958,368.36 = 165,598.68 : x
  2. Step 2: Convert to fraction form
    638,912.88/958,368.36 = 165,598.68/x
  3. Step 3: Cross multiply
    638,912.88x = 958,368.36 × 165,598.68
  4. Step 4: Simplify right side
    638,912.88x = 158,704,535,369.77
  5. Step 5: Solve for x
    x = 158,704,535,369.77/638,912.88
  6. Step 6: Final answer
    x = 248,397.77

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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.