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Finding the Fourth Proportional to 328,925.76, 493,389.92 and 79,607.36

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Solution

The fourth proportional to 328,925.76, 493,389.92 and 79,607.36 is: 119,411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,925.76 : 493,389.92 = 79,607.36 : x
  2. Step 2: Convert to fraction form
    328,925.76/493,389.92 = 79,607.36/x
  3. Step 3: Cross multiply
    328,925.76x = 493,389.92 × 79,607.36
  4. Step 4: Simplify right side
    328,925.76x = 39,277,468,981.81
  5. Step 5: Solve for x
    x = 39,277,468,981.81/328,925.76
  6. Step 6: Final answer
    x = 119,411.35

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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.