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Finding the Fourth Proportional to 425,109.60, 637,664.40 and 357,458.40

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Solution

The fourth proportional to 425,109.60, 637,664.40 and 357,458.40 is: 536,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,109.60 : 637,664.40 = 357,458.40 : x
  2. Step 2: Convert to fraction form
    425,109.60/637,664.40 = 357,458.40/x
  3. Step 3: Cross multiply
    425,109.60x = 637,664.40 × 357,458.40
  4. Step 4: Simplify right side
    425,109.60x = 227,938,496,160.96
  5. Step 5: Solve for x
    x = 227,938,496,160.96/425,109.60
  6. Step 6: Final answer
    x = 536,187.60

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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.