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Finding the Fourth Proportional to 314,970.40, 472,455.60 and 188,999.20

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Solution

The fourth proportional to 314,970.40, 472,455.60 and 188,999.20 is: 283,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,970.40 : 472,455.60 = 188,999.20 : x
  2. Step 2: Convert to fraction form
    314,970.40/472,455.60 = 188,999.20/x
  3. Step 3: Cross multiply
    314,970.40x = 472,455.60 × 188,999.20
  4. Step 4: Simplify right side
    314,970.40x = 89,293,730,435.52
  5. Step 5: Solve for x
    x = 89,293,730,435.52/314,970.40
  6. Step 6: Final answer
    x = 283,498.80

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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.