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Finding the Fourth Proportional to 201,345.60, 302,115.60 and 142,053.60

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Solution

The fourth proportional to 201,345.60, 302,115.60 and 142,053.60 is: 213,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,345.60 : 302,115.60 = 142,053.60 : x
  2. Step 2: Convert to fraction form
    201,345.60/302,115.60 = 142,053.60/x
  3. Step 3: Cross multiply
    201,345.60x = 302,115.60 × 142,053.60
  4. Step 4: Simplify right side
    201,345.60x = 42,916,608,596.16
  5. Step 5: Solve for x
    x = 42,916,608,596.16/201,345.60
  6. Step 6: Final answer
    x = 213,148.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.