Home / 285,216.95-393,604.06-156,153.28

Finding the Fourth Proportional to 285,216.95, 393,604.06 and 156,153.28

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Solution

The fourth proportional to 285,216.95, 393,604.06 and 156,153.28 is: 215,494.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,216.95 : 393,604.06 = 156,153.28 : x
  2. Step 2: Convert to fraction form
    285,216.95/393,604.06 = 156,153.28/x
  3. Step 3: Cross multiply
    285,216.95x = 393,604.06 × 156,153.28
  4. Step 4: Simplify right side
    285,216.95x = 61,462,564,990.32
  5. Step 5: Solve for x
    x = 61,462,564,990.32/285,216.95
  6. Step 6: Final answer
    x = 215,494.08

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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.