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Finding the Fourth Proportional to 245,834.60, 368,492.70 and 140,426.60

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Solution

The fourth proportional to 245,834.60, 368,492.70 and 140,426.60 is: 210,491.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,834.60 : 368,492.70 = 140,426.60 : x
  2. Step 2: Convert to fraction form
    245,834.60/368,492.70 = 140,426.60/x
  3. Step 3: Cross multiply
    245,834.60x = 368,492.70 × 140,426.60
  4. Step 4: Simplify right side
    245,834.60x = 51,746,176,985.82
  5. Step 5: Solve for x
    x = 51,746,176,985.82/245,834.60
  6. Step 6: Final answer
    x = 210,491.84

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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.