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Finding the Fourth Proportional to 348,740.40, 521,728.20 and 302,506.80

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Solution

The fourth proportional to 348,740.40, 521,728.20 and 302,506.80 is: 452,561.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,740.40 : 521,728.20 = 302,506.80 : x
  2. Step 2: Convert to fraction form
    348,740.40/521,728.20 = 302,506.80/x
  3. Step 3: Cross multiply
    348,740.40x = 521,728.20 × 302,506.80
  4. Step 4: Simplify right side
    348,740.40x = 157,826,328,251.76
  5. Step 5: Solve for x
    x = 157,826,328,251.76/348,740.40
  6. Step 6: Final answer
    x = 452,561.07

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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.