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Finding the Fourth Proportional to 192,345.40, 287,999.70 and 139,468.60

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Solution

The fourth proportional to 192,345.40, 287,999.70 and 139,468.60 is: 208,827.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,345.40 : 287,999.70 = 139,468.60 : x
  2. Step 2: Convert to fraction form
    192,345.40/287,999.70 = 139,468.60/x
  3. Step 3: Cross multiply
    192,345.40x = 287,999.70 × 139,468.60
  4. Step 4: Simplify right side
    192,345.40x = 40,166,914,959.42
  5. Step 5: Solve for x
    x = 40,166,914,959.42/192,345.40
  6. Step 6: Final answer
    x = 208,827.01

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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.