Home / 285,215.57-393,602.16-156,151.90

Finding the Fourth Proportional to 285,215.57, 393,602.16 and 156,151.90

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Solution

The fourth proportional to 285,215.57, 393,602.16 and 156,151.90 is: 215,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,215.57 : 393,602.16 = 156,151.90 : x
  2. Step 2: Convert to fraction form
    285,215.57/393,602.16 = 156,151.90/x
  3. Step 3: Cross multiply
    285,215.57x = 393,602.16 × 156,151.90
  4. Step 4: Simplify right side
    285,215.57x = 61,461,725,128.10
  5. Step 5: Solve for x
    x = 61,461,725,128.10/285,215.57
  6. Step 6: Final answer
    x = 215,492.18

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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.