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Finding the Fourth Proportional to 245,071.68, 367,681.35 and 87,279.60

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Solution

The fourth proportional to 245,071.68, 367,681.35 and 87,279.60 is: 130,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,071.68 : 367,681.35 = 87,279.60 : x
  2. Step 2: Convert to fraction form
    245,071.68/367,681.35 = 87,279.60/x
  3. Step 3: Cross multiply
    245,071.68x = 367,681.35 × 87,279.60
  4. Step 4: Simplify right side
    245,071.68x = 32,091,081,155.46
  5. Step 5: Solve for x
    x = 32,091,081,155.46/245,071.68
  6. Step 6: Final answer
    x = 130,945.69

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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.