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Finding the Fourth Proportional to 315,002.72, 434,688 and 179,018.70

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Solution

The fourth proportional to 315,002.72, 434,688 and 179,018.70 is: 247,036.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,002.72 : 434,688 = 179,018.70 : x
  2. Step 2: Convert to fraction form
    315,002.72/434,688 = 179,018.70/x
  3. Step 3: Cross multiply
    315,002.72x = 434,688 × 179,018.70
  4. Step 4: Simplify right side
    315,002.72x = 77,817,280,665.60
  5. Step 5: Solve for x
    x = 77,817,280,665.60/315,002.72
  6. Step 6: Final answer
    x = 247,036.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.