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Finding the Fourth Proportional to 210,417.70, 315,627.76 and 70,175.92

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Solution

The fourth proportional to 210,417.70, 315,627.76 and 70,175.92 is: 105,264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,417.70 : 315,627.76 = 70,175.92 : x
  2. Step 2: Convert to fraction form
    210,417.70/315,627.76 = 70,175.92/x
  3. Step 3: Cross multiply
    210,417.70x = 315,627.76 × 70,175.92
  4. Step 4: Simplify right side
    210,417.70x = 22,149,468,435.54
  5. Step 5: Solve for x
    x = 22,149,468,435.54/210,417.70
  6. Step 6: Final answer
    x = 105,264.28

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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.