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Finding the Fourth Proportional to 245,624.80, 368,437.20 and 87,858.40

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Solution

The fourth proportional to 245,624.80, 368,437.20 and 87,858.40 is: 131,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,624.80 : 368,437.20 = 87,858.40 : x
  2. Step 2: Convert to fraction form
    245,624.80/368,437.20 = 87,858.40/x
  3. Step 3: Cross multiply
    245,624.80x = 368,437.20 × 87,858.40
  4. Step 4: Simplify right side
    245,624.80x = 32,370,302,892.48
  5. Step 5: Solve for x
    x = 32,370,302,892.48/245,624.80
  6. Step 6: Final answer
    x = 131,787.60

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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.