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Finding the Fourth Proportional to 328,655.48, 493,175.93 and 139,104.07

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Solution

The fourth proportional to 328,655.48, 493,175.93 and 139,104.07 is: 208,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,655.48 : 493,175.93 = 139,104.07 : x
  2. Step 2: Convert to fraction form
    328,655.48/493,175.93 = 139,104.07/x
  3. Step 3: Cross multiply
    328,655.48x = 493,175.93 × 139,104.07
  4. Step 4: Simplify right side
    328,655.48x = 68,602,777,160.57
  5. Step 5: Solve for x
    x = 68,602,777,160.57/328,655.48
  6. Step 6: Final answer
    x = 208,737.67

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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.