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Finding the Fourth Proportional to 438,511.20, 657,766.80 and 248,898.30

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Solution

The fourth proportional to 438,511.20, 657,766.80 and 248,898.30 is: 373,347.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,511.20 : 657,766.80 = 248,898.30 : x
  2. Step 2: Convert to fraction form
    438,511.20/657,766.80 = 248,898.30/x
  3. Step 3: Cross multiply
    438,511.20x = 657,766.80 × 248,898.30
  4. Step 4: Simplify right side
    438,511.20x = 163,717,038,316.44
  5. Step 5: Solve for x
    x = 163,717,038,316.44/438,511.20
  6. Step 6: Final answer
    x = 373,347.45

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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.