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Finding the Fourth Proportional to 246,478.65, 369,664.59 and 78,012.67

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Solution

The fourth proportional to 246,478.65, 369,664.59 and 78,012.67 is: 117,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,478.65 : 369,664.59 = 78,012.67 : x
  2. Step 2: Convert to fraction form
    246,478.65/369,664.59 = 78,012.67/x
  3. Step 3: Cross multiply
    246,478.65x = 369,664.59 × 78,012.67
  4. Step 4: Simplify right side
    246,478.65x = 28,838,521,670.36
  5. Step 5: Solve for x
    x = 28,838,521,670.36/246,478.65
  6. Step 6: Final answer
    x = 117,002.11

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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.