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Finding the Fourth Proportional to 386,157.60, 532,868.40 and 216,358.92

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Solution

The fourth proportional to 386,157.60, 532,868.40 and 216,358.92 is: 298,559.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,157.60 : 532,868.40 = 216,358.92 : x
  2. Step 2: Convert to fraction form
    386,157.60/532,868.40 = 216,358.92/x
  3. Step 3: Cross multiply
    386,157.60x = 532,868.40 × 216,358.92
  4. Step 4: Simplify right side
    386,157.60x = 115,290,831,526.13
  5. Step 5: Solve for x
    x = 115,290,831,526.13/386,157.60
  6. Step 6: Final answer
    x = 298,559.01

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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.