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Finding the Fourth Proportional to 260,360.08, 390,543.36 and 82,866.40

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Solution

The fourth proportional to 260,360.08, 390,543.36 and 82,866.40 is: 124,300.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,360.08 : 390,543.36 = 82,866.40 : x
  2. Step 2: Convert to fraction form
    260,360.08/390,543.36 = 82,866.40/x
  3. Step 3: Cross multiply
    260,360.08x = 390,543.36 × 82,866.40
  4. Step 4: Simplify right side
    260,360.08x = 32,362,922,287.10
  5. Step 5: Solve for x
    x = 32,362,922,287.10/260,360.08
  6. Step 6: Final answer
    x = 124,300.63

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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.