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Finding the Fourth Proportional to 434,888.80, 651,718.80 and 321,685.60

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Solution

The fourth proportional to 434,888.80, 651,718.80 and 321,685.60 is: 482,073.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,888.80 : 651,718.80 = 321,685.60 : x
  2. Step 2: Convert to fraction form
    434,888.80/651,718.80 = 321,685.60/x
  3. Step 3: Cross multiply
    434,888.80x = 651,718.80 × 321,685.60
  4. Step 4: Simplify right side
    434,888.80x = 209,648,553,209.28
  5. Step 5: Solve for x
    x = 209,648,553,209.28/434,888.80
  6. Step 6: Final answer
    x = 482,073.93

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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.