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Finding the Fourth Proportional to 428,888.43, 591,885.36 and 237,901.77

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Solution

The fourth proportional to 428,888.43, 591,885.36 and 237,901.77 is: 328,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,888.43 : 591,885.36 = 237,901.77 : x
  2. Step 2: Convert to fraction form
    428,888.43/591,885.36 = 237,901.77/x
  3. Step 3: Cross multiply
    428,888.43x = 591,885.36 × 237,901.77
  4. Step 4: Simplify right side
    428,888.43x = 140,810,574,781.09
  5. Step 5: Solve for x
    x = 140,810,574,781.09/428,888.43
  6. Step 6: Final answer
    x = 328,315.16

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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.