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Finding the Fourth Proportional to 438,046.20, 657,090.90 and 228,094.20

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Solution

The fourth proportional to 438,046.20, 657,090.90 and 228,094.20 is: 342,152.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,046.20 : 657,090.90 = 228,094.20 : x
  2. Step 2: Convert to fraction form
    438,046.20/657,090.90 = 228,094.20/x
  3. Step 3: Cross multiply
    438,046.20x = 657,090.90 × 228,094.20
  4. Step 4: Simplify right side
    438,046.20x = 149,878,623,162.78
  5. Step 5: Solve for x
    x = 149,878,623,162.78/438,046.20
  6. Step 6: Final answer
    x = 342,152.55

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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.