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Finding the Fourth Proportional to 260,300.16, 390,463.92 and 73,326.24

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Solution

The fourth proportional to 260,300.16, 390,463.92 and 73,326.24 is: 109,993.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,300.16 : 390,463.92 = 73,326.24 : x
  2. Step 2: Convert to fraction form
    260,300.16/390,463.92 = 73,326.24/x
  3. Step 3: Cross multiply
    260,300.16x = 390,463.92 × 73,326.24
  4. Step 4: Simplify right side
    260,300.16x = 28,631,251,109.26
  5. Step 5: Solve for x
    x = 28,631,251,109.26/260,300.16
  6. Step 6: Final answer
    x = 109,993.21

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1.5x scale

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.