Home / 285,219.02-393,606.92-156,155.33

Finding the Fourth Proportional to 285,219.02, 393,606.92 and 156,155.33

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Solution

The fourth proportional to 285,219.02, 393,606.92 and 156,155.33 is: 215,496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,219.02 : 393,606.92 = 156,155.33 : x
  2. Step 2: Convert to fraction form
    285,219.02/393,606.92 = 156,155.33/x
  3. Step 3: Cross multiply
    285,219.02x = 393,606.92 × 156,155.33
  4. Step 4: Simplify right side
    285,219.02x = 61,463,817,702.11
  5. Step 5: Solve for x
    x = 61,463,817,702.11/285,219.02
  6. Step 6: Final answer
    x = 215,496.91

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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.