Home / 285,410.79-393,869.59-156,352.28

Finding the Fourth Proportional to 285,410.79, 393,869.59 and 156,352.28

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Solution

The fourth proportional to 285,410.79, 393,869.59 and 156,352.28 is: 215,767.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,410.79 : 393,869.59 = 156,352.28 : x
  2. Step 2: Convert to fraction form
    285,410.79/393,869.59 = 156,352.28/x
  3. Step 3: Cross multiply
    285,410.79x = 393,869.59 × 156,352.28
  4. Step 4: Simplify right side
    285,410.79x = 61,582,406,058.94
  5. Step 5: Solve for x
    x = 61,582,406,058.94/285,410.79
  6. Step 6: Final answer
    x = 215,767.62

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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.