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Finding the Fourth Proportional to 533,889.12, 736,801.20 and 307,530.72

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Solution

The fourth proportional to 533,889.12, 736,801.20 and 307,530.72 is: 424,412.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,889.12 : 736,801.20 = 307,530.72 : x
  2. Step 2: Convert to fraction form
    533,889.12/736,801.20 = 307,530.72/x
  3. Step 3: Cross multiply
    533,889.12x = 736,801.20 × 307,530.72
  4. Step 4: Simplify right side
    533,889.12x = 226,589,003,532.86
  5. Step 5: Solve for x
    x = 226,589,003,532.86/533,889.12
  6. Step 6: Final answer
    x = 424,412.10

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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.