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Finding the Fourth Proportional to 213,636.40, 320,426.76 and 55,877.02

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Solution

The fourth proportional to 213,636.40, 320,426.76 and 55,877.02 is: 83,808.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,636.40 : 320,426.76 = 55,877.02 : x
  2. Step 2: Convert to fraction form
    213,636.40/320,426.76 = 55,877.02/x
  3. Step 3: Cross multiply
    213,636.40x = 320,426.76 × 55,877.02
  4. Step 4: Simplify right side
    213,636.40x = 17,904,492,477.06
  5. Step 5: Solve for x
    x = 17,904,492,477.06/213,636.40
  6. Step 6: Final answer
    x = 83,808.25

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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.