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Finding the Fourth Proportional to 367,715.10, 507,300.90 and 212,637.72

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Solution

The fourth proportional to 367,715.10, 507,300.90 and 212,637.72 is: 293,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,715.10 : 507,300.90 = 212,637.72 : x
  2. Step 2: Convert to fraction form
    367,715.10/507,300.90 = 212,637.72/x
  3. Step 3: Cross multiply
    367,715.10x = 507,300.90 × 212,637.72
  4. Step 4: Simplify right side
    367,715.10x = 107,871,306,729.95
  5. Step 5: Solve for x
    x = 107,871,306,729.95/367,715.10
  6. Step 6: Final answer
    x = 293,355.66

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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.