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Finding the Fourth Proportional to 305,134.13, 421,098.95 and 174,323.32

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Solution

The fourth proportional to 305,134.13, 421,098.95 and 174,323.32 is: 240,574.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,134.13 : 421,098.95 = 174,323.32 : x
  2. Step 2: Convert to fraction form
    305,134.13/421,098.95 = 174,323.32/x
  3. Step 3: Cross multiply
    305,134.13x = 421,098.95 × 174,323.32
  4. Step 4: Simplify right side
    305,134.13x = 73,407,367,012.51
  5. Step 5: Solve for x
    x = 73,407,367,012.51/305,134.13
  6. Step 6: Final answer
    x = 240,574.09

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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.