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Finding the Fourth Proportional to 245,838.60, 368,498.70 and 140,430.60

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Solution

The fourth proportional to 245,838.60, 368,498.70 and 140,430.60 is: 210,497.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,838.60 : 368,498.70 = 140,430.60 : x
  2. Step 2: Convert to fraction form
    245,838.60/368,498.70 = 140,430.60/x
  3. Step 3: Cross multiply
    245,838.60x = 368,498.70 × 140,430.60
  4. Step 4: Simplify right side
    245,838.60x = 51,748,493,540.22
  5. Step 5: Solve for x
    x = 51,748,493,540.22/245,838.60
  6. Step 6: Final answer
    x = 210,497.84

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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.