Home / 315,256.20-472,106.70-209,502.60

Finding the Fourth Proportional to 315,256.20, 472,106.70 and 209,502.60

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Solution

The fourth proportional to 315,256.20, 472,106.70 and 209,502.60 is: 313,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,256.20 : 472,106.70 = 209,502.60 : x
  2. Step 2: Convert to fraction form
    315,256.20/472,106.70 = 209,502.60/x
  3. Step 3: Cross multiply
    315,256.20x = 472,106.70 × 209,502.60
  4. Step 4: Simplify right side
    315,256.20x = 98,907,581,127.42
  5. Step 5: Solve for x
    x = 98,907,581,127.42/315,256.20
  6. Step 6: Final answer
    x = 313,737.15

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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.