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Finding the Fourth Proportional to 380,937.79, 570,905.29 and 212,537.35

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Solution

The fourth proportional to 380,937.79, 570,905.29 and 212,537.35 is: 318,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,937.79 : 570,905.29 = 212,537.35 : x
  2. Step 2: Convert to fraction form
    380,937.79/570,905.29 = 212,537.35/x
  3. Step 3: Cross multiply
    380,937.79x = 570,905.29 × 212,537.35
  4. Step 4: Simplify right side
    380,937.79x = 121,338,697,437.58
  5. Step 5: Solve for x
    x = 121,338,697,437.58/380,937.79
  6. Step 6: Final answer
    x = 318,526.28

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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.