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Finding the Fourth Proportional to 262,484.40, 393,726.60 and 162,319.80

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Solution

The fourth proportional to 262,484.40, 393,726.60 and 162,319.80 is: 243,479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,484.40 : 393,726.60 = 162,319.80 : x
  2. Step 2: Convert to fraction form
    262,484.40/393,726.60 = 162,319.80/x
  3. Step 3: Cross multiply
    262,484.40x = 393,726.60 × 162,319.80
  4. Step 4: Simplify right side
    262,484.40x = 63,909,622,966.68
  5. Step 5: Solve for x
    x = 63,909,622,966.68/262,484.40
  6. Step 6: Final answer
    x = 243,479.70

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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.