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Finding the Fourth Proportional to 553,782.40, 831,062.40 and 238,465.60

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Solution

The fourth proportional to 553,782.40, 831,062.40 and 238,465.60 is: 357,865.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,782.40 : 831,062.40 = 238,465.60 : x
  2. Step 2: Convert to fraction form
    553,782.40/831,062.40 = 238,465.60/x
  3. Step 3: Cross multiply
    553,782.40x = 831,062.40 × 238,465.60
  4. Step 4: Simplify right side
    553,782.40x = 198,179,793,853.44
  5. Step 5: Solve for x
    x = 198,179,793,853.44/553,782.40
  6. Step 6: Final answer
    x = 357,865.82

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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.