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Finding the Fourth Proportional to 384,462.96, 530,573.90 and 212,389.80

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Solution

The fourth proportional to 384,462.96, 530,573.90 and 212,389.80 is: 293,106.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,462.96 : 530,573.90 = 212,389.80 : x
  2. Step 2: Convert to fraction form
    384,462.96/530,573.90 = 212,389.80/x
  3. Step 3: Cross multiply
    384,462.96x = 530,573.90 × 212,389.80
  4. Step 4: Simplify right side
    384,462.96x = 112,688,484,506.22
  5. Step 5: Solve for x
    x = 112,688,484,506.22/384,462.96
  6. Step 6: Final answer
    x = 293,106.22

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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.