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Finding the Fourth Proportional to 157,638.40, 236,457.60 and 155,046.40

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Solution

The fourth proportional to 157,638.40, 236,457.60 and 155,046.40 is: 232,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,638.40 : 236,457.60 = 155,046.40 : x
  2. Step 2: Convert to fraction form
    157,638.40/236,457.60 = 155,046.40/x
  3. Step 3: Cross multiply
    157,638.40x = 236,457.60 × 155,046.40
  4. Step 4: Simplify right side
    157,638.40x = 36,661,899,632.64
  5. Step 5: Solve for x
    x = 36,661,899,632.64/157,638.40
  6. Step 6: Final answer
    x = 232,569.60

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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.