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Finding the Fourth Proportional to 280,165.47, 386,620.70 and 152,841.03

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Solution

The fourth proportional to 280,165.47, 386,620.70 and 152,841.03 is: 210,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,165.47 : 386,620.70 = 152,841.03 : x
  2. Step 2: Convert to fraction form
    280,165.47/386,620.70 = 152,841.03/x
  3. Step 3: Cross multiply
    280,165.47x = 386,620.70 × 152,841.03
  4. Step 4: Simplify right side
    280,165.47x = 59,091,505,243.12
  5. Step 5: Solve for x
    x = 59,091,505,243.12/280,165.47
  6. Step 6: Final answer
    x = 210,916.45

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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.