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Finding the Fourth Proportional to 421,064.88, 581,073.60 and 230,078.24

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Solution

The fourth proportional to 421,064.88, 581,073.60 and 230,078.24 is: 317,510.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,064.88 : 581,073.60 = 230,078.24 : x
  2. Step 2: Convert to fraction form
    421,064.88/581,073.60 = 230,078.24/x
  3. Step 3: Cross multiply
    421,064.88x = 581,073.60 × 230,078.24
  4. Step 4: Simplify right side
    421,064.88x = 133,692,391,198.46
  5. Step 5: Solve for x
    x = 133,692,391,198.46/421,064.88
  6. Step 6: Final answer
    x = 317,510.19

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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.