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Finding the Fourth Proportional to 326,498.51, 488,480.65 and 286,214.48

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Solution

The fourth proportional to 326,498.51, 488,480.65 and 286,214.48 is: 428,210.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,498.51 : 488,480.65 = 286,214.48 : x
  2. Step 2: Convert to fraction form
    326,498.51/488,480.65 = 286,214.48/x
  3. Step 3: Cross multiply
    326,498.51x = 488,480.65 × 286,214.48
  4. Step 4: Simplify right side
    326,498.51x = 139,810,233,903.68
  5. Step 5: Solve for x
    x = 139,810,233,903.68/326,498.51
  6. Step 6: Final answer
    x = 428,210.94

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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.