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Finding the Fourth Proportional to 245,457.20, 368,401.80 and 145,492.40

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Solution

The fourth proportional to 245,457.20, 368,401.80 and 145,492.40 is: 218,366.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,457.20 : 368,401.80 = 145,492.40 : x
  2. Step 2: Convert to fraction form
    245,457.20/368,401.80 = 145,492.40/x
  3. Step 3: Cross multiply
    245,457.20x = 368,401.80 × 145,492.40
  4. Step 4: Simplify right side
    245,457.20x = 53,599,662,046.32
  5. Step 5: Solve for x
    x = 53,599,662,046.32/245,457.20
  6. Step 6: Final answer
    x = 218,366.63

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1.5x scale

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.