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Finding the Fourth Proportional to 421,364.34, 581,483.84 and 230,390.06

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Solution

The fourth proportional to 421,364.34, 581,483.84 and 230,390.06 is: 317,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,364.34 : 581,483.84 = 230,390.06 : x
  2. Step 2: Convert to fraction form
    421,364.34/581,483.84 = 230,390.06/x
  3. Step 3: Cross multiply
    421,364.34x = 581,483.84 × 230,390.06
  4. Step 4: Simplify right side
    421,364.34x = 133,968,092,727.26
  5. Step 5: Solve for x
    x = 133,968,092,727.26/421,364.34
  6. Step 6: Final answer
    x = 317,938.85

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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.