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Finding the Fourth Proportional to 421,369.92, 581,490.72 and 230,384.88

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Solution

The fourth proportional to 421,369.92, 581,490.72 and 230,384.88 is: 317,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,369.92 : 581,490.72 = 230,384.88 : x
  2. Step 2: Convert to fraction form
    421,369.92/581,490.72 = 230,384.88/x
  3. Step 3: Cross multiply
    421,369.92x = 581,490.72 × 230,384.88
  4. Step 4: Simplify right side
    421,369.92x = 133,966,669,748.31
  5. Step 5: Solve for x
    x = 133,966,669,748.31/421,369.92
  6. Step 6: Final answer
    x = 317,931.26

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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.