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Finding the Fourth Proportional to 421,353.88, 581,468.55 and 230,368.84

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Solution

The fourth proportional to 421,353.88, 581,468.55 and 230,368.84 is: 317,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,353.88 : 581,468.55 = 230,368.84 : x
  2. Step 2: Convert to fraction form
    421,353.88/581,468.55 = 230,368.84/x
  3. Step 3: Cross multiply
    421,353.88x = 581,468.55 × 230,368.84
  4. Step 4: Simplify right side
    421,353.88x = 133,952,235,359.98
  5. Step 5: Solve for x
    x = 133,952,235,359.98/421,353.88
  6. Step 6: Final answer
    x = 317,909.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.