Home / 285,098.10-393,436.43-154,275.77

Finding the Fourth Proportional to 285,098.10, 393,436.43 and 154,275.77

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Solution

The fourth proportional to 285,098.10, 393,436.43 and 154,275.77 is: 212,901.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,098.10 : 393,436.43 = 154,275.77 : x
  2. Step 2: Convert to fraction form
    285,098.10/393,436.43 = 154,275.77/x
  3. Step 3: Cross multiply
    285,098.10x = 393,436.43 × 154,275.77
  4. Step 4: Simplify right side
    285,098.10x = 60,697,705,445.74
  5. Step 5: Solve for x
    x = 60,697,705,445.74/285,098.10
  6. Step 6: Final answer
    x = 212,901.12

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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.