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Finding the Fourth Proportional to 265,878.86, 366,917.21 and 145,020.16

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Solution

The fourth proportional to 265,878.86, 366,917.21 and 145,020.16 is: 200,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,878.86 : 366,917.21 = 145,020.16 : x
  2. Step 2: Convert to fraction form
    265,878.86/366,917.21 = 145,020.16/x
  3. Step 3: Cross multiply
    265,878.86x = 366,917.21 × 145,020.16
  4. Step 4: Simplify right side
    265,878.86x = 53,210,391,946.21
  5. Step 5: Solve for x
    x = 53,210,391,946.21/265,878.86
  6. Step 6: Final answer
    x = 200,130.21

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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.