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Finding the Fourth Proportional to 238,637, 357,957.66 and 72,425

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Solution

The fourth proportional to 238,637, 357,957.66 and 72,425 is: 108,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,637 : 357,957.66 = 72,425 : x
  2. Step 2: Convert to fraction form
    238,637/357,957.66 = 72,425/x
  3. Step 3: Cross multiply
    238,637x = 357,957.66 × 72,425
  4. Step 4: Simplify right side
    238,637x = 25,925,083,525.50
  5. Step 5: Solve for x
    x = 25,925,083,525.50/238,637
  6. Step 6: Final answer
    x = 108,638.16

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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.