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Finding the Fourth Proportional to 245,588.52, 368,381.55 and 212,207.01

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Solution

The fourth proportional to 245,588.52, 368,381.55 and 212,207.01 is: 318,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,588.52 : 368,381.55 = 212,207.01 : x
  2. Step 2: Convert to fraction form
    245,588.52/368,381.55 = 212,207.01/x
  3. Step 3: Cross multiply
    245,588.52x = 368,381.55 × 212,207.01
  4. Step 4: Simplify right side
    245,588.52x = 78,173,147,264.67
  5. Step 5: Solve for x
    x = 78,173,147,264.67/245,588.52
  6. Step 6: Final answer
    x = 318,309.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.