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Finding the Fourth Proportional to 425,260.04, 638,141.22 and 155,364.21

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Solution

The fourth proportional to 425,260.04, 638,141.22 and 155,364.21 is: 233,138.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,260.04 : 638,141.22 = 155,364.21 : x
  2. Step 2: Convert to fraction form
    425,260.04/638,141.22 = 155,364.21/x
  3. Step 3: Cross multiply
    425,260.04x = 638,141.22 × 155,364.21
  4. Step 4: Simplify right side
    425,260.04x = 99,144,306,513.74
  5. Step 5: Solve for x
    x = 99,144,306,513.74/425,260.04
  6. Step 6: Final answer
    x = 233,138.08

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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.