Home / 425,831.18-638,746.86-173,249.12

Finding the Fourth Proportional to 425,831.18, 638,746.86 and 173,249.12

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Solution

The fourth proportional to 425,831.18, 638,746.86 and 173,249.12 is: 259,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,831.18 : 638,746.86 = 173,249.12 : x
  2. Step 2: Convert to fraction form
    425,831.18/638,746.86 = 173,249.12/x
  3. Step 3: Cross multiply
    425,831.18x = 638,746.86 × 173,249.12
  4. Step 4: Simplify right side
    425,831.18x = 110,662,331,397.76
  5. Step 5: Solve for x
    x = 110,662,331,397.76/425,831.18
  6. Step 6: Final answer
    x = 259,873.72

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Similar ratio
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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.