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Finding the Fourth Proportional to 307,530.80, 460,421.40 and 272,538.80

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Solution

The fourth proportional to 307,530.80, 460,421.40 and 272,538.80 is: 408,032.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,530.80 : 460,421.40 = 272,538.80 : x
  2. Step 2: Convert to fraction form
    307,530.80/460,421.40 = 272,538.80/x
  3. Step 3: Cross multiply
    307,530.80x = 460,421.40 × 272,538.80
  4. Step 4: Simplify right side
    307,530.80x = 125,482,695,850.32
  5. Step 5: Solve for x
    x = 125,482,695,850.32/307,530.80
  6. Step 6: Final answer
    x = 408,032.94

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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.