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Finding the Fourth Proportional to 495,183.65, 742,272.98 and 281,510.15

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Solution

The fourth proportional to 495,183.65, 742,272.98 and 281,510.15 is: 421,979.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,183.65 : 742,272.98 = 281,510.15 : x
  2. Step 2: Convert to fraction form
    495,183.65/742,272.98 = 281,510.15/x
  3. Step 3: Cross multiply
    495,183.65x = 742,272.98 × 281,510.15
  4. Step 4: Simplify right side
    495,183.65x = 208,957,378,388.88
  5. Step 5: Solve for x
    x = 208,957,378,388.88/495,183.65
  6. Step 6: Final answer
    x = 421,979.56

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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.