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Finding the Fourth Proportional to 421,461.32, 581,616.60 and 230,474.84

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Solution

The fourth proportional to 421,461.32, 581,616.60 and 230,474.84 is: 318,055.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,461.32 : 581,616.60 = 230,474.84 : x
  2. Step 2: Convert to fraction form
    421,461.32/581,616.60 = 230,474.84/x
  3. Step 3: Cross multiply
    421,461.32x = 581,616.60 × 230,474.84
  4. Step 4: Simplify right side
    421,461.32x = 134,047,992,826.34
  5. Step 5: Solve for x
    x = 134,047,992,826.34/421,461.32
  6. Step 6: Final answer
    x = 318,055.27

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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.