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Finding the Fourth Proportional to 438,137.80, 657,498.30 and 248,597.80

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Solution

The fourth proportional to 438,137.80, 657,498.30 and 248,597.80 is: 373,062.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,137.80 : 657,498.30 = 248,597.80 : x
  2. Step 2: Convert to fraction form
    438,137.80/657,498.30 = 248,597.80/x
  3. Step 3: Cross multiply
    438,137.80x = 657,498.30 × 248,597.80
  4. Step 4: Simplify right side
    438,137.80x = 163,452,630,883.74
  5. Step 5: Solve for x
    x = 163,452,630,883.74/438,137.80
  6. Step 6: Final answer
    x = 373,062.15

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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.