Home / 278,688.90-384,577.79-157,831.05

Finding the Fourth Proportional to 278,688.90, 384,577.79 and 157,831.05

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Solution

The fourth proportional to 278,688.90, 384,577.79 and 157,831.05 is: 217,799.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,688.90 : 384,577.79 = 157,831.05 : x
  2. Step 2: Convert to fraction form
    278,688.90/384,577.79 = 157,831.05/x
  3. Step 3: Cross multiply
    278,688.90x = 384,577.79 × 157,831.05
  4. Step 4: Simplify right side
    278,688.90x = 60,698,315,613.22
  5. Step 5: Solve for x
    x = 60,698,315,613.22/278,688.90
  6. Step 6: Final answer
    x = 217,799.54

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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.