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Finding the Fourth Proportional to 425,830.07, 638,852.51 and 141,522.11

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Solution

The fourth proportional to 425,830.07, 638,852.51 and 141,522.11 is: 212,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,830.07 : 638,852.51 = 141,522.11 : x
  2. Step 2: Convert to fraction form
    425,830.07/638,852.51 = 141,522.11/x
  3. Step 3: Cross multiply
    425,830.07x = 638,852.51 × 141,522.11
  4. Step 4: Simplify right side
    425,830.07x = 90,411,751,292.12
  5. Step 5: Solve for x
    x = 90,411,751,292.12/425,830.07
  6. Step 6: Final answer
    x = 212,318.85

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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.