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Finding the Fourth Proportional to 438,475.77, 657,670.55 and 297,228.38

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Solution

The fourth proportional to 438,475.77, 657,670.55 and 297,228.38 is: 445,813.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,475.77 : 657,670.55 = 297,228.38 : x
  2. Step 2: Convert to fraction form
    438,475.77/657,670.55 = 297,228.38/x
  3. Step 3: Cross multiply
    438,475.77x = 657,670.55 × 297,228.38
  4. Step 4: Simplify right side
    438,475.77x = 195,478,347,375.71
  5. Step 5: Solve for x
    x = 195,478,347,375.71/438,475.77
  6. Step 6: Final answer
    x = 445,813.34

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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.