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Finding the Fourth Proportional to 216,973.59, 325,512.35 and 90,543.51

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Solution

The fourth proportional to 216,973.59, 325,512.35 and 90,543.51 is: 135,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,973.59 : 325,512.35 = 90,543.51 : x
  2. Step 2: Convert to fraction form
    216,973.59/325,512.35 = 90,543.51/x
  3. Step 3: Cross multiply
    216,973.59x = 325,512.35 × 90,543.51
  4. Step 4: Simplify right side
    216,973.59x = 29,473,030,264.63
  5. Step 5: Solve for x
    x = 29,473,030,264.63/216,973.59
  6. Step 6: Final answer
    x = 135,836.95

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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.