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Finding the Fourth Proportional to 318,398.51, 439,374.06 and 175,154.87

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Solution

The fourth proportional to 318,398.51, 439,374.06 and 175,154.87 is: 241,704.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,398.51 : 439,374.06 = 175,154.87 : x
  2. Step 2: Convert to fraction form
    318,398.51/439,374.06 = 175,154.87/x
  3. Step 3: Cross multiply
    318,398.51x = 439,374.06 × 175,154.87
  4. Step 4: Simplify right side
    318,398.51x = 76,958,507,459.11
  5. Step 5: Solve for x
    x = 76,958,507,459.11/318,398.51
  6. Step 6: Final answer
    x = 241,704.98

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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.