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Finding the Fourth Proportional to 384,632.75, 530,791.89 and 212,545.91

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Solution

The fourth proportional to 384,632.75, 530,791.89 and 212,545.91 is: 293,312.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,632.75 : 530,791.89 = 212,545.91 : x
  2. Step 2: Convert to fraction form
    384,632.75/530,791.89 = 212,545.91/x
  3. Step 3: Cross multiply
    384,632.75x = 530,791.89 × 212,545.91
  4. Step 4: Simplify right side
    384,632.75x = 112,817,645,280.67
  5. Step 5: Solve for x
    x = 112,817,645,280.67/384,632.75
  6. Step 6: Final answer
    x = 293,312.63

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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.