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Finding the Fourth Proportional to 282,992.76, 390,540.30 and 155,678.04

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Solution

The fourth proportional to 282,992.76, 390,540.30 and 155,678.04 is: 214,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,992.76 : 390,540.30 = 155,678.04 : x
  2. Step 2: Convert to fraction form
    282,992.76/390,540.30 = 155,678.04/x
  3. Step 3: Cross multiply
    282,992.76x = 390,540.30 × 155,678.04
  4. Step 4: Simplify right side
    282,992.76x = 60,798,548,445.01
  5. Step 5: Solve for x
    x = 60,798,548,445.01/282,992.76
  6. Step 6: Final answer
    x = 214,841.36

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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.