Home / 280,018.54-386,424.03-152,691.40

Finding the Fourth Proportional to 280,018.54, 386,424.03 and 152,691.40

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Solution

The fourth proportional to 280,018.54, 386,424.03 and 152,691.40 is: 210,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,018.54 : 386,424.03 = 152,691.40 : x
  2. Step 2: Convert to fraction form
    280,018.54/386,424.03 = 152,691.40/x
  3. Step 3: Cross multiply
    280,018.54x = 386,424.03 × 152,691.40
  4. Step 4: Simplify right side
    280,018.54x = 59,003,626,134.34
  5. Step 5: Solve for x
    x = 59,003,626,134.34/280,018.54
  6. Step 6: Final answer
    x = 210,713.28

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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.