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Finding the Fourth Proportional to 545,255.76, 817,220.48 and 291,913.68

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Solution

The fourth proportional to 545,255.76, 817,220.48 and 291,913.68 is: 437,515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,255.76 : 817,220.48 = 291,913.68 : x
  2. Step 2: Convert to fraction form
    545,255.76/817,220.48 = 291,913.68/x
  3. Step 3: Cross multiply
    545,255.76x = 817,220.48 × 291,913.68
  4. Step 4: Simplify right side
    545,255.76x = 238,557,837,688.17
  5. Step 5: Solve for x
    x = 238,557,837,688.17/545,255.76
  6. Step 6: Final answer
    x = 437,515.48

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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.