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Finding the Fourth Proportional to 282,866.02, 390,344.49 and 155,534.02

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Solution

The fourth proportional to 282,866.02, 390,344.49 and 155,534.02 is: 214,631.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,866.02 : 390,344.49 = 155,534.02 : x
  2. Step 2: Convert to fraction form
    282,866.02/390,344.49 = 155,534.02/x
  3. Step 3: Cross multiply
    282,866.02x = 390,344.49 × 155,534.02
  4. Step 4: Simplify right side
    282,866.02x = 60,711,847,714.55
  5. Step 5: Solve for x
    x = 60,711,847,714.55/282,866.02
  6. Step 6: Final answer
    x = 214,631.11

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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.