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Finding the Fourth Proportional to 232,689.60, 348,960.40 and 74,881.28

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Solution

The fourth proportional to 232,689.60, 348,960.40 and 74,881.28 is: 112,298.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    232,689.60 : 348,960.40 = 74,881.28 : x
  2. Step 2: Convert to fraction form
    232,689.60/348,960.40 = 74,881.28/x
  3. Step 3: Cross multiply
    232,689.60x = 348,960.40 × 74,881.28
  4. Step 4: Simplify right side
    232,689.60x = 26,130,601,421.31
  5. Step 5: Solve for x
    x = 26,130,601,421.31/232,689.60
  6. Step 6: Final answer
    x = 112,298.11

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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.