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Finding the Fourth Proportional to 281,835.48, 388,920.72 and 168,720.60

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Solution

The fourth proportional to 281,835.48, 388,920.72 and 168,720.60 is: 232,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,835.48 : 388,920.72 = 168,720.60 : x
  2. Step 2: Convert to fraction form
    281,835.48/388,920.72 = 168,720.60/x
  3. Step 3: Cross multiply
    281,835.48x = 388,920.72 × 168,720.60
  4. Step 4: Simplify right side
    281,835.48x = 65,618,937,230.83
  5. Step 5: Solve for x
    x = 65,618,937,230.83/281,835.48
  6. Step 6: Final answer
    x = 232,827.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.