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Finding the Fourth Proportional to 545,188.72, 817,892.76 and 190,107.40

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Solution

The fourth proportional to 545,188.72, 817,892.76 and 190,107.40 is: 285,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,188.72 : 817,892.76 = 190,107.40 : x
  2. Step 2: Convert to fraction form
    545,188.72/817,892.76 = 190,107.40/x
  3. Step 3: Cross multiply
    545,188.72x = 817,892.76 × 190,107.40
  4. Step 4: Simplify right side
    545,188.72x = 155,487,466,082.42
  5. Step 5: Solve for x
    x = 155,487,466,082.42/545,188.72
  6. Step 6: Final answer
    x = 285,199.35

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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.