Home / 314,905.45-472,522.20-137,430.40

Finding the Fourth Proportional to 314,905.45, 472,522.20 and 137,430.40

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Solution

The fourth proportional to 314,905.45, 472,522.20 and 137,430.40 is: 206,217.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,905.45 : 472,522.20 = 137,430.40 : x
  2. Step 2: Convert to fraction form
    314,905.45/472,522.20 = 137,430.40/x
  3. Step 3: Cross multiply
    314,905.45x = 472,522.20 × 137,430.40
  4. Step 4: Simplify right side
    314,905.45x = 64,938,914,954.88
  5. Step 5: Solve for x
    x = 64,938,914,954.88/314,905.45
  6. Step 6: Final answer
    x = 206,217.18

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1.5x scale

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.