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Finding the Fourth Proportional to 425,557.56, 638,482.14 and 145,271.64

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Solution

The fourth proportional to 425,557.56, 638,482.14 and 145,271.64 is: 217,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,557.56 : 638,482.14 = 145,271.64 : x
  2. Step 2: Convert to fraction form
    425,557.56/638,482.14 = 145,271.64/x
  3. Step 3: Cross multiply
    425,557.56x = 638,482.14 × 145,271.64
  4. Step 4: Simplify right side
    425,557.56x = 92,753,347,588.51
  5. Step 5: Solve for x
    x = 92,753,347,588.51/425,557.56
  6. Step 6: Final answer
    x = 217,957.23

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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.