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Finding the Fourth Proportional to 321,703.20, 482,554.80 and 121,957.20

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Solution

The fourth proportional to 321,703.20, 482,554.80 and 121,957.20 is: 182,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,703.20 : 482,554.80 = 121,957.20 : x
  2. Step 2: Convert to fraction form
    321,703.20/482,554.80 = 121,957.20/x
  3. Step 3: Cross multiply
    321,703.20x = 482,554.80 × 121,957.20
  4. Step 4: Simplify right side
    321,703.20x = 58,851,032,254.56
  5. Step 5: Solve for x
    x = 58,851,032,254.56/321,703.20
  6. Step 6: Final answer
    x = 182,935.80

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1.5x scale

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.