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Finding the Fourth Proportional to 421,197.37, 581,232.31 and 230,210.91

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Solution

The fourth proportional to 421,197.37, 581,232.31 and 230,210.91 is: 317,680.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,197.37 : 581,232.31 = 230,210.91 : x
  2. Step 2: Convert to fraction form
    421,197.37/581,232.31 = 230,210.91/x
  3. Step 3: Cross multiply
    421,197.37x = 581,232.31 × 230,210.91
  4. Step 4: Simplify right side
    421,197.37x = 133,806,018,430.98
  5. Step 5: Solve for x
    x = 133,806,018,430.98/421,197.37
  6. Step 6: Final answer
    x = 317,680.09

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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.