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Finding the Fourth Proportional to 235,484.78, 324,854.73 and 139,923.81

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Solution

The fourth proportional to 235,484.78, 324,854.73 and 139,923.81 is: 193,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,484.78 : 324,854.73 = 139,923.81 : x
  2. Step 2: Convert to fraction form
    235,484.78/324,854.73 = 139,923.81/x
  3. Step 3: Cross multiply
    235,484.78x = 324,854.73 × 139,923.81
  4. Step 4: Simplify right side
    235,484.78x = 45,454,911,518.12
  5. Step 5: Solve for x
    x = 45,454,911,518.12/235,484.78
  6. Step 6: Final answer
    x = 193,026.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.