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Finding the Fourth Proportional to 262,712, 362,542.56 and 143,480

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Solution

The fourth proportional to 262,712, 362,542.56 and 143,480 is: 198,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,712 : 362,542.56 = 143,480 : x
  2. Step 2: Convert to fraction form
    262,712/362,542.56 = 143,480/x
  3. Step 3: Cross multiply
    262,712x = 362,542.56 × 143,480
  4. Step 4: Simplify right side
    262,712x = 52,017,606,508.80
  5. Step 5: Solve for x
    x = 52,017,606,508.80/262,712
  6. Step 6: Final answer
    x = 198,002.40

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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.