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Finding the Fourth Proportional to 330,295.47, 455,792.48 and 187,056.54

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Solution

The fourth proportional to 330,295.47, 455,792.48 and 187,056.54 is: 258,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,295.47 : 455,792.48 = 187,056.54 : x
  2. Step 2: Convert to fraction form
    330,295.47/455,792.48 = 187,056.54/x
  3. Step 3: Cross multiply
    330,295.47x = 455,792.48 × 187,056.54
  4. Step 4: Simplify right side
    330,295.47x = 85,258,963,331.54
  5. Step 5: Solve for x
    x = 85,258,963,331.54/330,295.47
  6. Step 6: Final answer
    x = 258,129.38

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1.5x scale

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.