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Finding the Fourth Proportional to 288,833.40, 432,888.60 and 139,033.56

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Solution

The fourth proportional to 288,833.40, 432,888.60 and 139,033.56 is: 208,376.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,833.40 : 432,888.60 = 139,033.56 : x
  2. Step 2: Convert to fraction form
    288,833.40/432,888.60 = 139,033.56/x
  3. Step 3: Cross multiply
    288,833.40x = 432,888.60 × 139,033.56
  4. Step 4: Simplify right side
    288,833.40x = 60,186,043,141.42
  5. Step 5: Solve for x
    x = 60,186,043,141.42/288,833.40
  6. Step 6: Final answer
    x = 208,376.33

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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.