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Finding the Fourth Proportional to 216,458.40, 298,804.56 and 131,602.56

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Solution

The fourth proportional to 216,458.40, 298,804.56 and 131,602.56 is: 181,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,458.40 : 298,804.56 = 131,602.56 : x
  2. Step 2: Convert to fraction form
    216,458.40/298,804.56 = 131,602.56/x
  3. Step 3: Cross multiply
    216,458.40x = 298,804.56 × 131,602.56
  4. Step 4: Simplify right side
    216,458.40x = 39,323,445,035.67
  5. Step 5: Solve for x
    x = 39,323,445,035.67/216,458.40
  6. Step 6: Final answer
    x = 181,667.45

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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.