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Finding the Fourth Proportional to 438,548.64, 605,094.48 and 257,251.20

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Solution

The fourth proportional to 438,548.64, 605,094.48 and 257,251.20 is: 354,946.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,548.64 : 605,094.48 = 257,251.20 : x
  2. Step 2: Convert to fraction form
    438,548.64/605,094.48 = 257,251.20/x
  3. Step 3: Cross multiply
    438,548.64x = 605,094.48 × 257,251.20
  4. Step 4: Simplify right side
    438,548.64x = 155,661,281,093.38
  5. Step 5: Solve for x
    x = 155,661,281,093.38/438,548.64
  6. Step 6: Final answer
    x = 354,946.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.