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Finding the Fourth Proportional to 368,913.60, 553,629.60 and 158,702.40

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Solution

The fourth proportional to 368,913.60, 553,629.60 and 158,702.40 is: 238,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,913.60 : 553,629.60 = 158,702.40 : x
  2. Step 2: Convert to fraction form
    368,913.60/553,629.60 = 158,702.40/x
  3. Step 3: Cross multiply
    368,913.60x = 553,629.60 × 158,702.40
  4. Step 4: Simplify right side
    368,913.60x = 87,862,346,231.04
  5. Step 5: Solve for x
    x = 87,862,346,231.04/368,913.60
  6. Step 6: Final answer
    x = 238,165.10

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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.