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Finding the Fourth Proportional to 424,160.42, 636,224.03 and 143,677.67

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Solution

The fourth proportional to 424,160.42, 636,224.03 and 143,677.67 is: 215,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,160.42 : 636,224.03 = 143,677.67 : x
  2. Step 2: Convert to fraction form
    424,160.42/636,224.03 = 143,677.67/x
  3. Step 3: Cross multiply
    424,160.42x = 636,224.03 × 143,677.67
  4. Step 4: Simplify right side
    424,160.42x = 91,411,185,510.02
  5. Step 5: Solve for x
    x = 91,411,185,510.02/424,160.42
  6. Step 6: Final answer
    x = 215,510.88

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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.