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Finding the Fourth Proportional to 438,060.40, 657,309.30 and 248,666.20

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Solution

The fourth proportional to 438,060.40, 657,309.30 and 248,666.20 is: 373,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,060.40 : 657,309.30 = 248,666.20 : x
  2. Step 2: Convert to fraction form
    438,060.40/657,309.30 = 248,666.20/x
  3. Step 3: Cross multiply
    438,060.40x = 657,309.30 × 248,666.20
  4. Step 4: Simplify right side
    438,060.40x = 163,450,605,855.66
  5. Step 5: Solve for x
    x = 163,450,605,855.66/438,060.40
  6. Step 6: Final answer
    x = 373,123.45

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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.