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Finding the Fourth Proportional to 371,318.40, 556,977.60 and 245,347.20

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Solution

The fourth proportional to 371,318.40, 556,977.60 and 245,347.20 is: 368,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,318.40 : 556,977.60 = 245,347.20 : x
  2. Step 2: Convert to fraction form
    371,318.40/556,977.60 = 245,347.20/x
  3. Step 3: Cross multiply
    371,318.40x = 556,977.60 × 245,347.20
  4. Step 4: Simplify right side
    371,318.40x = 136,652,894,622.72
  5. Step 5: Solve for x
    x = 136,652,894,622.72/371,318.40
  6. Step 6: Final answer
    x = 368,020.80

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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.