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Finding the Fourth Proportional to 260,433.92, 390,673.92 and 142,054.40

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Solution

The fourth proportional to 260,433.92, 390,673.92 and 142,054.40 is: 213,094.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,433.92 : 390,673.92 = 142,054.40 : x
  2. Step 2: Convert to fraction form
    260,433.92/390,673.92 = 142,054.40/x
  3. Step 3: Cross multiply
    260,433.92x = 390,673.92 × 142,054.40
  4. Step 4: Simplify right side
    260,433.92x = 55,496,949,301.25
  5. Step 5: Solve for x
    x = 55,496,949,301.25/260,433.92
  6. Step 6: Final answer
    x = 213,094.17

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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.