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Finding the Fourth Proportional to 220,204.31, 303,885.95 and 124,730.82

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Solution

The fourth proportional to 220,204.31, 303,885.95 and 124,730.82 is: 172,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,204.31 : 303,885.95 = 124,730.82 : x
  2. Step 2: Convert to fraction form
    220,204.31/303,885.95 = 124,730.82/x
  3. Step 3: Cross multiply
    220,204.31x = 303,885.95 × 124,730.82
  4. Step 4: Simplify right side
    220,204.31x = 37,903,943,106.32
  5. Step 5: Solve for x
    x = 37,903,943,106.32/220,204.31
  6. Step 6: Final answer
    x = 172,130.80

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1.5x scale

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.