Home / 399,980.16-552,340.91-256,989.34

Finding the Fourth Proportional to 399,980.16, 552,340.91 and 256,989.34

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Solution

The fourth proportional to 399,980.16, 552,340.91 and 256,989.34 is: 354,881.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,980.16 : 552,340.91 = 256,989.34 : x
  2. Step 2: Convert to fraction form
    399,980.16/552,340.91 = 256,989.34/x
  3. Step 3: Cross multiply
    399,980.16x = 552,340.91 × 256,989.34
  4. Step 4: Simplify right side
    399,980.16x = 141,945,725,915.90
  5. Step 5: Solve for x
    x = 141,945,725,915.90/399,980.16
  6. Step 6: Final answer
    x = 354,881.92

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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.