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Finding the Fourth Proportional to 425,513.70, 638,416.35 and 189,026.10

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Solution

The fourth proportional to 425,513.70, 638,416.35 and 189,026.10 is: 283,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,513.70 : 638,416.35 = 189,026.10 : x
  2. Step 2: Convert to fraction form
    425,513.70/638,416.35 = 189,026.10/x
  3. Step 3: Cross multiply
    425,513.70x = 638,416.35 × 189,026.10
  4. Step 4: Simplify right side
    425,513.70x = 120,677,352,816.74
  5. Step 5: Solve for x
    x = 120,677,352,816.74/425,513.70
  6. Step 6: Final answer
    x = 283,603.92

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1.5x scale

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.