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Finding the Fourth Proportional to 528,014.64, 791,837.64 and 212,389.68

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Solution

The fourth proportional to 528,014.64, 791,837.64 and 212,389.68 is: 318,510.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,014.64 : 791,837.64 = 212,389.68 : x
  2. Step 2: Convert to fraction form
    528,014.64/791,837.64 = 212,389.68/x
  3. Step 3: Cross multiply
    528,014.64x = 791,837.64 × 212,389.68
  4. Step 4: Simplify right side
    528,014.64x = 168,178,142,971.56
  5. Step 5: Solve for x
    x = 168,178,142,971.56/528,014.64
  6. Step 6: Final answer
    x = 318,510.38

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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.