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Finding the Fourth Proportional to 201,357.60, 302,079.60 and 61,130.40

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Solution

The fourth proportional to 201,357.60, 302,079.60 and 61,130.40 is: 91,708.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,357.60 : 302,079.60 = 61,130.40 : x
  2. Step 2: Convert to fraction form
    201,357.60/302,079.60 = 61,130.40/x
  3. Step 3: Cross multiply
    201,357.60x = 302,079.60 × 61,130.40
  4. Step 4: Simplify right side
    201,357.60x = 18,466,246,779.84
  5. Step 5: Solve for x
    x = 18,466,246,779.84/201,357.60
  6. Step 6: Final answer
    x = 91,708.72

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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.