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Finding the Fourth Proportional to 421,101.12, 581,109.96 and 230,115.68

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Solution

The fourth proportional to 421,101.12, 581,109.96 and 230,115.68 is: 317,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,101.12 : 581,109.96 = 230,115.68 : x
  2. Step 2: Convert to fraction form
    421,101.12/581,109.96 = 230,115.68/x
  3. Step 3: Cross multiply
    421,101.12x = 581,109.96 × 230,115.68
  4. Step 4: Simplify right side
    421,101.12x = 133,722,513,600.17
  5. Step 5: Solve for x
    x = 133,722,513,600.17/421,101.12
  6. Step 6: Final answer
    x = 317,554.40

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1.5x scale

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.