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Finding the Fourth Proportional to 421,345.98, 581,457.52 and 230,359.42

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Solution

The fourth proportional to 421,345.98, 581,457.52 and 230,359.42 is: 317,896.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,345.98 : 581,457.52 = 230,359.42 : x
  2. Step 2: Convert to fraction form
    421,345.98/581,457.52 = 230,359.42/x
  3. Step 3: Cross multiply
    421,345.98x = 581,457.52 × 230,359.42
  4. Step 4: Simplify right side
    421,345.98x = 133,944,217,061.84
  5. Step 5: Solve for x
    x = 133,944,217,061.84/421,345.98
  6. Step 6: Final answer
    x = 317,896.04

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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.