Home / 165,005.20-247,507.80-155,328.40

Finding the Fourth Proportional to 165,005.20, 247,507.80 and 155,328.40

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Solution

The fourth proportional to 165,005.20, 247,507.80 and 155,328.40 is: 232,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,005.20 : 247,507.80 = 155,328.40 : x
  2. Step 2: Convert to fraction form
    165,005.20/247,507.80 = 155,328.40/x
  3. Step 3: Cross multiply
    165,005.20x = 247,507.80 × 155,328.40
  4. Step 4: Simplify right side
    165,005.20x = 38,444,990,561.52
  5. Step 5: Solve for x
    x = 38,444,990,561.52/165,005.20
  6. Step 6: Final answer
    x = 232,992.60

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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.