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Finding the Fourth Proportional to 281,878.40, 423,854.40 and 236,259.20

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Solution

The fourth proportional to 281,878.40, 423,854.40 and 236,259.20 is: 355,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,878.40 : 423,854.40 = 236,259.20 : x
  2. Step 2: Convert to fraction form
    281,878.40/423,854.40 = 236,259.20/x
  3. Step 3: Cross multiply
    281,878.40x = 423,854.40 × 236,259.20
  4. Step 4: Simplify right side
    281,878.40x = 100,139,501,460.48
  5. Step 5: Solve for x
    x = 100,139,501,460.48/281,878.40
  6. Step 6: Final answer
    x = 355,257.80

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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.