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Finding the Fourth Proportional to 376,394.67, 564,516.78 and 139,681.98

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Solution

The fourth proportional to 376,394.67, 564,516.78 and 139,681.98 is: 209,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,394.67 : 564,516.78 = 139,681.98 : x
  2. Step 2: Convert to fraction form
    376,394.67/564,516.78 = 139,681.98/x
  3. Step 3: Cross multiply
    376,394.67x = 564,516.78 × 139,681.98
  4. Step 4: Simplify right side
    376,394.67x = 78,852,821,573.62
  5. Step 5: Solve for x
    x = 78,852,821,573.62/376,394.67
  6. Step 6: Final answer
    x = 209,495.05

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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.