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Finding the Fourth Proportional to 421,477.32, 581,626.89 and 230,486.61

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Solution

The fourth proportional to 421,477.32, 581,626.89 and 230,486.61 is: 318,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,477.32 : 581,626.89 = 230,486.61 : x
  2. Step 2: Convert to fraction form
    421,477.32/581,626.89 = 230,486.61/x
  3. Step 3: Cross multiply
    421,477.32x = 581,626.89 × 230,486.61
  4. Step 4: Simplify right side
    421,477.32x = 134,057,210,160.94
  5. Step 5: Solve for x
    x = 134,057,210,160.94/421,477.32
  6. Step 6: Final answer
    x = 318,065.06

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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.