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Finding the Fourth Proportional to 384,408.33, 530,437.99 and 212,316.07

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Solution

The fourth proportional to 384,408.33, 530,437.99 and 212,316.07 is: 292,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,408.33 : 530,437.99 = 212,316.07 : x
  2. Step 2: Convert to fraction form
    384,408.33/530,437.99 = 212,316.07/x
  3. Step 3: Cross multiply
    384,408.33x = 530,437.99 × 212,316.07
  4. Step 4: Simplify right side
    384,408.33x = 112,620,509,415.50
  5. Step 5: Solve for x
    x = 112,620,509,415.50/384,408.33
  6. Step 6: Final answer
    x = 292,971.04

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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.