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Finding the Fourth Proportional to 425,885.01, 639,111.59 and 220,908.57

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Solution

The fourth proportional to 425,885.01, 639,111.59 and 220,908.57 is: 331,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,885.01 : 639,111.59 = 220,908.57 : x
  2. Step 2: Convert to fraction form
    425,885.01/639,111.59 = 220,908.57/x
  3. Step 3: Cross multiply
    425,885.01x = 639,111.59 × 220,908.57
  4. Step 4: Simplify right side
    425,885.01x = 141,185,226,312.78
  5. Step 5: Solve for x
    x = 141,185,226,312.78/425,885.01
  6. Step 6: Final answer
    x = 331,510.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.