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Finding the Fourth Proportional to 186,427.60, 279,619.80 and 53,328.40

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Solution

The fourth proportional to 186,427.60, 279,619.80 and 53,328.40 is: 79,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,427.60 : 279,619.80 = 53,328.40 : x
  2. Step 2: Convert to fraction form
    186,427.60/279,619.80 = 53,328.40/x
  3. Step 3: Cross multiply
    186,427.60x = 279,619.80 × 53,328.40
  4. Step 4: Simplify right side
    186,427.60x = 14,911,676,542.32
  5. Step 5: Solve for x
    x = 14,911,676,542.32/186,427.60
  6. Step 6: Final answer
    x = 79,986.42

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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.