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Finding the Fourth Proportional to 315,032.40, 472,552.20 and 78,375.60

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Solution

The fourth proportional to 315,032.40, 472,552.20 and 78,375.60 is: 117,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,032.40 : 472,552.20 = 78,375.60 : x
  2. Step 2: Convert to fraction form
    315,032.40/472,552.20 = 78,375.60/x
  3. Step 3: Cross multiply
    315,032.40x = 472,552.20 × 78,375.60
  4. Step 4: Simplify right side
    315,032.40x = 37,036,562,206.32
  5. Step 5: Solve for x
    x = 37,036,562,206.32/315,032.40
  6. Step 6: Final answer
    x = 117,564.30

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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.