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Finding the Fourth Proportional to 385,600.84, 532,140.42 and 215,830.60

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Solution

The fourth proportional to 385,600.84, 532,140.42 and 215,830.60 is: 297,852.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,600.84 : 532,140.42 = 215,830.60 : x
  2. Step 2: Convert to fraction form
    385,600.84/532,140.42 = 215,830.60/x
  3. Step 3: Cross multiply
    385,600.84x = 532,140.42 × 215,830.60
  4. Step 4: Simplify right side
    385,600.84x = 114,852,186,132.85
  5. Step 5: Solve for x
    x = 114,852,186,132.85/385,600.84
  6. Step 6: Final answer
    x = 297,852.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.