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Finding the Fourth Proportional to 438,053.40, 657,298.80 and 248,659.20

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Solution

The fourth proportional to 438,053.40, 657,298.80 and 248,659.20 is: 373,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,053.40 : 657,298.80 = 248,659.20 : x
  2. Step 2: Convert to fraction form
    438,053.40/657,298.80 = 248,659.20/x
  3. Step 3: Cross multiply
    438,053.40x = 657,298.80 × 248,659.20
  4. Step 4: Simplify right side
    438,053.40x = 163,443,393,768.96
  5. Step 5: Solve for x
    x = 163,443,393,768.96/438,053.40
  6. Step 6: Final answer
    x = 373,112.94

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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.