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Finding the Fourth Proportional to 371,002.40, 556,503.60 and 221,411.60

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Solution

The fourth proportional to 371,002.40, 556,503.60 and 221,411.60 is: 332,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,002.40 : 556,503.60 = 221,411.60 : x
  2. Step 2: Convert to fraction form
    371,002.40/556,503.60 = 221,411.60/x
  3. Step 3: Cross multiply
    371,002.40x = 556,503.60 × 221,411.60
  4. Step 4: Simplify right side
    371,002.40x = 123,216,352,481.76
  5. Step 5: Solve for x
    x = 123,216,352,481.76/371,002.40
  6. Step 6: Final answer
    x = 332,117.40

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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.