Home / 215,426.40-322,945.20-140,582.40

Finding the Fourth Proportional to 215,426.40, 322,945.20 and 140,582.40

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Solution

The fourth proportional to 215,426.40, 322,945.20 and 140,582.40 is: 210,746.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,426.40 : 322,945.20 = 140,582.40 : x
  2. Step 2: Convert to fraction form
    215,426.40/322,945.20 = 140,582.40/x
  3. Step 3: Cross multiply
    215,426.40x = 322,945.20 × 140,582.40
  4. Step 4: Simplify right side
    215,426.40x = 45,400,411,284.48
  5. Step 5: Solve for x
    x = 45,400,411,284.48/215,426.40
  6. Step 6: Final answer
    x = 210,746.74

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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.