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Finding the Fourth Proportional to 271,964.80, 375,303.60 and 155,681.20

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Solution

The fourth proportional to 271,964.80, 375,303.60 and 155,681.20 is: 214,835.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,964.80 : 375,303.60 = 155,681.20 : x
  2. Step 2: Convert to fraction form
    271,964.80/375,303.60 = 155,681.20/x
  3. Step 3: Cross multiply
    271,964.80x = 375,303.60 × 155,681.20
  4. Step 4: Simplify right side
    271,964.80x = 58,427,714,812.32
  5. Step 5: Solve for x
    x = 58,427,714,812.32/271,964.80
  6. Step 6: Final answer
    x = 214,835.58

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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.