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Finding the Fourth Proportional to 385,541.40, 532,047.06 and 215,775.53

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Solution

The fourth proportional to 385,541.40, 532,047.06 and 215,775.53 is: 297,770.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,541.40 : 532,047.06 = 215,775.53 : x
  2. Step 2: Convert to fraction form
    385,541.40/532,047.06 = 215,775.53/x
  3. Step 3: Cross multiply
    385,541.40x = 532,047.06 × 215,775.53
  4. Step 4: Simplify right side
    385,541.40x = 114,802,736,356.44
  5. Step 5: Solve for x
    x = 114,802,736,356.44/385,541.40
  6. Step 6: Final answer
    x = 297,770.19

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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.