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Finding the Fourth Proportional to 191,866.40, 287,799.60 and 152,208.80

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Solution

The fourth proportional to 191,866.40, 287,799.60 and 152,208.80 is: 228,313.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,866.40 : 287,799.60 = 152,208.80 : x
  2. Step 2: Convert to fraction form
    191,866.40/287,799.60 = 152,208.80/x
  3. Step 3: Cross multiply
    191,866.40x = 287,799.60 × 152,208.80
  4. Step 4: Simplify right side
    191,866.40x = 43,805,631,756.48
  5. Step 5: Solve for x
    x = 43,805,631,756.48/191,866.40
  6. Step 6: Final answer
    x = 228,313.20

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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.