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Finding the Fourth Proportional to 438,000.60, 657,000.90 and 250,858.20

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Solution

The fourth proportional to 438,000.60, 657,000.90 and 250,858.20 is: 376,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,000.60 : 657,000.90 = 250,858.20 : x
  2. Step 2: Convert to fraction form
    438,000.60/657,000.90 = 250,858.20/x
  3. Step 3: Cross multiply
    438,000.60x = 657,000.90 × 250,858.20
  4. Step 4: Simplify right side
    438,000.60x = 164,814,063,172.38
  5. Step 5: Solve for x
    x = 164,814,063,172.38/438,000.60
  6. Step 6: Final answer
    x = 376,287.30

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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.