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Finding the Fourth Proportional to 368,889.60, 553,258.80 and 102,583.20

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Solution

The fourth proportional to 368,889.60, 553,258.80 and 102,583.20 is: 153,853.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,889.60 : 553,258.80 = 102,583.20 : x
  2. Step 2: Convert to fraction form
    368,889.60/553,258.80 = 102,583.20/x
  3. Step 3: Cross multiply
    368,889.60x = 553,258.80 × 102,583.20
  4. Step 4: Simplify right side
    368,889.60x = 56,755,058,132.16
  5. Step 5: Solve for x
    x = 56,755,058,132.16/368,889.60
  6. Step 6: Final answer
    x = 153,853.78

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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.