Home / 314,911.40-472,367.10-78,252.20

Finding the Fourth Proportional to 314,911.40, 472,367.10 and 78,252.20

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Solution

The fourth proportional to 314,911.40, 472,367.10 and 78,252.20 is: 117,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,911.40 : 472,367.10 = 78,252.20 : x
  2. Step 2: Convert to fraction form
    314,911.40/472,367.10 = 78,252.20/x
  3. Step 3: Cross multiply
    314,911.40x = 472,367.10 × 78,252.20
  4. Step 4: Simplify right side
    314,911.40x = 36,963,764,782.62
  5. Step 5: Solve for x
    x = 36,963,764,782.62/314,911.40
  6. Step 6: Final answer
    x = 117,378.30

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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.