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Finding the Fourth Proportional to 368,901.60, 553,276.80 and 102,595.20

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Solution

The fourth proportional to 368,901.60, 553,276.80 and 102,595.20 is: 153,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,901.60 : 553,276.80 = 102,595.20 : x
  2. Step 2: Convert to fraction form
    368,901.60/553,276.80 = 102,595.20/x
  3. Step 3: Cross multiply
    368,901.60x = 553,276.80 × 102,595.20
  4. Step 4: Simplify right side
    368,901.60x = 56,763,543,951.36
  5. Step 5: Solve for x
    x = 56,763,543,951.36/368,901.60
  6. Step 6: Final answer
    x = 153,871.77

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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.