Home / 280,013.76-386,428.32-152,696.34

Finding the Fourth Proportional to 280,013.76, 386,428.32 and 152,696.34

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Solution

The fourth proportional to 280,013.76, 386,428.32 and 152,696.34 is: 210,726.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,013.76 : 386,428.32 = 152,696.34 : x
  2. Step 2: Convert to fraction form
    280,013.76/386,428.32 = 152,696.34/x
  3. Step 3: Cross multiply
    280,013.76x = 386,428.32 × 152,696.34
  4. Step 4: Simplify right side
    280,013.76x = 59,006,190,136.35
  5. Step 5: Solve for x
    x = 59,006,190,136.35/280,013.76
  6. Step 6: Final answer
    x = 210,726.04

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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.