Home / 385,678.31-532,266.29-222,387.32

Finding the Fourth Proportional to 385,678.31, 532,266.29 and 222,387.32

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Solution

The fourth proportional to 385,678.31, 532,266.29 and 222,387.32 is: 306,911.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,678.31 : 532,266.29 = 222,387.32 : x
  2. Step 2: Convert to fraction form
    385,678.31/532,266.29 = 222,387.32/x
  3. Step 3: Cross multiply
    385,678.31x = 532,266.29 × 222,387.32
  4. Step 4: Simplify right side
    385,678.31x = 118,369,274,812.12
  5. Step 5: Solve for x
    x = 118,369,274,812.12/385,678.31
  6. Step 6: Final answer
    x = 306,911.93

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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.