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Finding the Fourth Proportional to 421,366.96, 581,488.86 and 230,380.35

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Solution

The fourth proportional to 421,366.96, 581,488.86 and 230,380.35 is: 317,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,366.96 : 581,488.86 = 230,380.35 : x
  2. Step 2: Convert to fraction form
    421,366.96/581,488.86 = 230,380.35/x
  3. Step 3: Cross multiply
    421,366.96x = 581,488.86 × 230,380.35
  4. Step 4: Simplify right side
    421,366.96x = 133,963,607,087.90
  5. Step 5: Solve for x
    x = 133,963,607,087.90/421,366.96
  6. Step 6: Final answer
    x = 317,926.23

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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.