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Finding the Fourth Proportional to 368,123.10, 552,703.05 and 289,326.30

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Solution

The fourth proportional to 368,123.10, 552,703.05 and 289,326.30 is: 434,396.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,123.10 : 552,703.05 = 289,326.30 : x
  2. Step 2: Convert to fraction form
    368,123.10/552,703.05 = 289,326.30/x
  3. Step 3: Cross multiply
    368,123.10x = 552,703.05 × 289,326.30
  4. Step 4: Simplify right side
    368,123.10x = 159,911,528,455.22
  5. Step 5: Solve for x
    x = 159,911,528,455.22/368,123.10
  6. Step 6: Final answer
    x = 434,396.89

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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.